Goodman Mfg Heat Pump RHABD User Manual

(RHA**B*D/VHA**B*A)  
&Air Conditioning  
Heating  
®
Remote Heat Pump  
Comfort. Quality. Trust.  
Installation Instructions  
Affix this manual, Specification Sheet and Users  
Information Manual adjacent to the unit.  
Table of Contents  
Safety Instructions .............................................................2  
General ................................................................................3  
SHIPPING AND HANDLING ............................................................. 3  
LOCATION AND CLEARANCES ...................................................... 3  
ROOFTOP INSTALLATIONS ............................................................ 3  
APPLICATION NOTE ........................................................................ 3  
Refrigerant Piping.....................................................3  
REFRIGERANT VAPOR AND LIQUID LINE SIZING ....................... 3  
REFRIGERANT VAPOR AND LIQUID LINE ROUTING ................... 4  
SWEAT CONNECTIONS AT THE UNIT ........................................... 4  
Safe Refrigerant Handling .................................................4  
LEAK TESTING ................................................................................. 5  
ID COIL AND LINE SETS EVACUATION.......................................... 5  
Step 1. Confirm Proper Pump And Gauge Operation .............. 5  
Step 2. Evacuate Lines And Indoor Coil. ................................. 6  
Electrical Connections.......................................................7  
WIRING ............................................................................................. 7  
System Startup ...................................................................8  
PRELIMINARY CHARGE ADJUSTMENT......................................... 8  
FINAL CHARGE ADJUSTMENT ....................................................... 8  
Matching System ....................................................................... 8  
AMANA-Approved Mix-Matched System Combinations ........... 8  
ID COIL WITH EXPANSION VALVE ................................................. 8  
ID COIL WITH ORIFICE .................................................................. 10  
Troubleshooting ...............................................................10  
Defrost System .......................................................10  
R
R
C
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.  
ATTENTION INSTALLING PERSONNEL  
As a professional installer you have an obligation  
toknowtheproductbetterthanthecustomer. This  
includes all safety precautions and related items.  
Remember, it is your responsibility to install the  
product safely and to know it well enough to be  
able to instruct a customer in its safe use.  
Prior to actual installation, thoroughly familiarize  
yourself with this Instruction Manual. Pay special  
attention to all safety warnings. Often during  
installation or repair it is possible to place yourself  
in a position which is more hazardous than when  
the unit is in operation.  
Safety is a matter of common sense...a matter of  
thinking before acting. Most dealers have a list of  
specific good safety practices...follow them.  
The precautions listed in this Installation Manual  
areintendedassupplementaltoexistingpractices.  
However,ifthereisadirectconflictbetweenexisting  
practices and the content of this manual, the  
precautions listed here take precedence.  
Goodman Company, L.P.  
1810 Wilson Parkway • Fayetteville, Tennessee 37334  
 
Part No. 10845809 Rev. 1  
Printed in USA  
January 2003  
DO NOT locate the unit:  
General  
– Directly under a vent termination for a gas appliance.  
– Within 3 feet of a clothes drier vent.  
This manual covers only the installation of the remote heat  
pump. See the unit specification sheet for information  
regarding accessories.  
– Where the refreezing of defrost water would create  
a hazard.  
– Where water may rise into the unit.  
SHIPPING AND HANDLING  
– Where the noise would prove to be a nuisance to the  
customer (i.e. windows, patios, decks, etc.)  
Units are securely packed in shipping containers ap-  
provedbytheInternationalSafeTransitAssociation. Check  
the carton upon arrival for external damage. If damage is  
found, file a request in writing for inspection by the carrier  
agent immediately. The carrier is responsible for making  
prompt inspection of damage and for a thorough investiga-  
tion of each claim. The distributor or manufacturer will not  
accept claims from dealers for transportation damage. If  
no damage is found, carefully remove all shipping material  
and properly dispose of it.  
DO locate the unit:  
– With the bottom of the unit at least three inches  
above the maximum expected snow accumulation  
level.  
– Inaccordancewiththeminimumclearancesdescribed  
in Figure 1.  
– To minimize the length of refrigerant piping required.  
– To provide adequate service clearances.  
– On a level concrete pad (or other sturdy, weather  
resistant platform).  
Keep the unit as upright as possible. Laying the unit on its  
side or top could cause equipment damage.  
– Isolated from the building structure to avoid transmis-  
sion of vibrations.  
LOCATION AND CLEARANCES  
This unit is for outdoor installation only. The unit cannot be  
completely enclosed. At least one side must be unre-  
stricted. Refer to Figure 1 for clearances from the sides  
and top of the unit to walls and other objects.  
NOTE: Short runs of refrigerant piping are better than long  
runs. Locate the unit to provide safe access for future  
maintenance and service. If possible, discuss unit location  
with the owner before proceeding.  
NOTE: These minimum clearances do not guarantee  
adequate service access. Sufficient clearances for servic-  
ing the unit(s) must be provided.  
ROOFTOP INSTALLATIONS  
Before installing this unit on a roof, ensure that the roof will  
support the weight of the unit, its platform, and the service  
personnel. For the unit weight, see the outdoor unit  
specification sheet (all weights are approximate). If there  
is doubt about the adequacy of the roof, contact a qualified  
architect or structural engineer before installing the unit.  
Ensure the unit is placed on a level, weather-resistant  
platform.  
If installing two or more units at the same location, allow at  
least 24 inches between the units when using the 6”-12”-  
12” guidelines in Figure 1. The space between two units  
may be reduced to 12” if the clearances in Figure 1 are  
increased to 12”-24”-24”.  
MINIMUM CLEARANCES  
APPLICATION NOTE  
For proper performance, the indoor equipment and duct-  
work must be adequate for moving about 400 CFM of  
indoor air for every ton of cooling capacity to be installed.  
If they are not, modify the ductwork or indoor equipment  
accordingly.  
12"  
5'  
12"  
6"  
Refrigerant Piping  
REFRIGERANT VAPOR AND LIQUID LINE SIZING  
See unit “Specification Sheet” for the required vapor and  
liquid line tubing sizes. The listed sizes in the specification  
sheet are suitable for line lengths of fifty feet or less and  
indoor coil elevations of no more than forty feet above or  
below the outdoor unit. NOTE: Unit performance is  
affected by vapor line tubing size. A larger than required  
vapor line tubing inhibits oil return to the unit. A smaller  
than required vapor line tubing size decreases unit perfor-  
mance by up to 10%. If a run of more than fifty feet is  
required, contact your Amana distributor for assistance.  
SIDE VIEW  
Figure 1  
Check the indoor coil liquid and vapor line diameter. A  
bushing or coupling may be needed to match with the line  
3
 
sizes used. If mix-matching to a restrictor orifice indoor  
coil, check the “Specification Sheet” for the proper orifice  
size to be used with this outdoor unit. Piston orifices are  
supplied with the outdoor unit.  
Safe Refrigerant Handling  
WARNING  
To avoid possible explosion, death, or  
injury; practice safe handling of  
refrigerants.  
REFRIGERANT VAPOR AND LIQUID LINE ROUTING  
All of the vapor line must be insulated. The insulation must  
include a vapor barrier.  
The unit liquid line must be outside the vapor line insula-  
tion. If any part of the liquid line runs through an area that  
will be hotter than 120°F, that part must be insulated.  
While these items will not cover every conceivable situa-  
tion, they should serve as a useful guide.  
Avoid burying refrigerant lines. If you must bury them, first  
dig the trench so that it gradually slopes toward the  
compressor (at least 1 inch per 10 feet). Then, insulate the  
liquid and suction lines separately. Enclose all under-  
ground portions of the refrigerant lines in waterproof ma-  
terial (conduit or pipe). If the lines must pass under or  
through a concrete slab, be sure they are adequately  
protected.  
WARNING  
Refrigerants are heavier than air. They can  
“push out” the oxygen in your lungs or in  
any enclosed space. To avoid possible  
death or difficulty in breathing:  
• Never sniff a refrigerant.  
• Seal the holes where the refrigerant piping enters  
the building and support piping as necessary.  
• Never purge refrigerant into an enclosed  
room or space. In fact, all refrigerants  
must, BY LAW, be recovered.  
• Be careful not to kink or dent the refrigerant lines.  
Kinked or dented lines will cause poor perfor-  
mance or compressor damage.  
• Ifanindoorleakissuspected,thoroughly  
ventilatetheareabeforebeginningwork.  
• Liquid refrigerant can be very cold. To  
avoid possible frostbite or blindness,  
avoid contact and wear gloves and  
goggles. Ifliquidrefrigerantdoescontact  
your skin or eyes, get medical help  
immediately.  
CAUTION  
To prevent damage to the unit, a bi-flow  
filter drier must be installed in the liquid  
line.  
Install the bi-flow line filter drier shipped with the unit near  
the condensing unit or near the indoor coil. A new filter  
drier (properly sized and rated for R-22) MUST be installed  
with new outdoor units in order for the compressor war-  
ranty to remain valid. Any time the refrigeration system has  
been opened for service, a new properly-sized bi-flow filter  
drier rated for R-22 must be installed.  
• Always follow EPA regulations. Never  
burn refrigerant, as poisonous gas will  
be produced.  
WARNING  
To avoid possible explosion:  
SWEAT CONNECTIONS AT THE UNIT  
• Neverapplyflameorsteamtoarefrigerant  
cylinder. If you must heat a cylinder for  
faster charging, partially immerse it in  
warm water.  
• Never fill a cylinder more than 80% full of  
liquid refrigerant.  
NOTE: When brazing, use a brazing alloy of 2% minimum  
silver content. Do not use flux.  
Before brazing connections, ensure the refrigerant line  
ends are cut square, deburred, cleaned, free of nicks or  
dents and round. Any other condition would increase the  
chance of refrigerant leakage.  
• Never add anything other than R-22 an  
R-22 cylinder.  
• Storecylindersinacool,dryplace. Never  
During brazing, wrap the component with a wet rag, or use  
a thermal heat trap compound as directed by the com-  
pound manufacturer, to avoid overheating the service  
valve, TXV valve, or filter drier while brazing.  
use a cylinder as a platform or a roller.  
After brazing, quench the joints with water or a wet cloth to  
prevent overheating of the service valve. Inspect the paint  
finish of the filter drier. The finish must be intact after  
brazing. If the paint of the steel filter drier has been burned  
or chipped, repaint or treat with a rust preventative. This  
is especially important on suction line filter driers which are  
continually wet during the unit operation.  
4
 
WARNING  
6. Close the valve on the nitrogen cylinder and discon-  
nect it from the gauge manifold.  
To avoid possible explosion, use only  
returnable (not disposable) service  
cylinders when removing refrigerant from  
a system.  
7. Check for leaks. Apply a soap solution on all connec-  
tions and joints. If you see bubbles, you have a leak.  
Mark these locations.  
NOTE: If you use an electronic leak detector to test for  
leaks, add a trace of R-22 to the system (if permitted by  
current EPA regulations) before testing.  
• Ensure the cylinder is free of damage  
which could lead to a leak or explosion.  
• Ensurethehydrostatictestdatedoesnot  
exceed 5 years.  
8. Using the gauge manifold, carefully release the nitro-  
gen from the system. If leaks are found, repair them.  
After repair, repeat the above pressure test. If no leaks  
exist, proceed to ID Coil and Line Sets Evacuation.  
• Ensure the pressure rating meets or  
exceeds 400 psig.  
When in doubt, do not use cylinder.  
ID COIL AND LINE SETS EVACUATION  
THERMOCOUPLE  
VACUUM  
LEAK TESTING  
GAUGE  
WARNING  
DIAL-A-CHARGE  
CHARGING CYLINDER  
TO  
To avoid the risk of fire or explosion, never  
useoxygen,highpressureairorflammable  
gases for leak testing of a refrigeration  
system.  
RELATED  
GAUGE  
PORTS OF  
COND. UNIT  
LOW SIDE  
GAUGE  
HIGH SIDE  
GAUGE  
HIGH VACUUM  
MANIFOLD  
D
C
A
B
E
1. Before testing, ensure both hand valves on the gauge  
manifold are closed relative to the center port (i.e.,  
turned IN all the way.)  
LARGE DIAMETER  
BRAIDED VACUUM  
HOSES  
F
2. Attach the gauge manifold to the service valves on the  
unit (see Figure 4).  
Do not open the unit service valves.  
A. LOW SIDE VALVE  
B. HIGH SIDE VALVE  
C. VACUUM PUMP  
D. THERMOCOUPLE GAUGE  
E. MANIFOLD GAUGE  
F. CHARGING CYLINDER  
Do not use refrigerant from the unit for leak testing.  
The refrigerant in your unit has been precisely mea-  
sured at the factory for optimum performance.  
HIGH VACUUM PUMP  
3. Connect a cylinder of dry nitrogen to the center port on  
the gauge manifold.  
Figure 2  
WARNING  
Step 1. Confirm Proper Pump And Gauge Operation  
To avoid possible explosion, the line from  
the nitrogen cylinder must include a  
pressure regulator and a pressure relief  
valve. The pressure relief valve must be  
set to open at no more than 150 psig.  
a. Connect vacuum pump, high vacuum manifold set  
with high vacuum hoses, vacuum gauge and charging  
cylinder to unit service valves as shown in Figure 2.  
Ensure all manifold valves are fully closed.  
b. Open the shutoff valve leading to the vacuum pump  
(Figure 2) (C), start the pump, and watch the gauge  
manifold. The readings in the gauge manifold should  
drop to approximately 29 inches Hg. If this does not  
happen, there is probably a leak in the pump and  
gauge system. Repair the leak and test again.  
4. Open the hand valve a minimal amount on the line  
coming from the nitrogen cylinder.  
5. Open the high pressure valve on the manifold gauge.  
Pressurize the refrigerant lines and the indoor coil to  
150 psig (1034 kPA). To reach 150 psig, you may  
need to further open the hand valve on the nitrogen  
cylinder.  
c. Open the vacuum gauge valve (D) and evacuate to  
250 microns or less. If the system cannot be evacu-  
ated, replace the vacuum pump equipment and repeat  
steps (a) through (c) again. Otherwise, the pump and  
gauge are operating properly and you can continue on  
to the next step; evacuating the system. Before  
proceeding, be sure to close the valve (D) to the  
vacuum gauge to avoid “pegging the meter” and  
potential gauge damage.  
WARNING  
To avoid possible explosion or equipment  
damage, do not exceed 150 psig when  
pressure testing.  
5
 
Step 2. Evacuate Lines And Indoor Coil.  
a. Openthehighandlowsidevalves(B&A)onthegauge  
manifold. NOTE: Only open the valve (E) on the  
gauge manifold leading to the cylinder, not the valve  
on the charging cylinder (F).  
b. Evacuate the system to about 29 inches Hg as mea-  
sured by the low side (compound) gauge.  
c. Open the valve (D) to the vacuum gauge. Evacuate  
until the gauge reads 250 microns or less.  
d. Close the valve to the vacuum pump (C). Wait five  
minutes, then check the pressure on the vacuum  
gauge:  
1. If the pressure is not more than 1500 microns, the  
system is leak-free and properly evacuated. Pro-  
ceed to step (e).  
2. If the pressure rises, but holds at about 5000 mi-  
crons, moisture and noncondensibles are still  
present. Open the valve to the vacuum pump (E),  
and go back to step (c).  
3. If the pressure rises above 5000 microns, a leak is  
present. Go back to “Leak Testing” section on page  
4.  
e. Close the valve to the vacuum gauge.  
f. Close the valve to the vacuum pump. Shut off the  
pump.  
6
 
Electrical Connections  
MAXIMUM ALLOWABLE WIRE LENGTH IN FEET TO LIMIT VOLTAGE DROP TO 2%  
MINIMUM CIRCUIT AMPACITY OF OUTDOOR UNIT (MCA)  
WIRE SIZE  
(AWG)  
10  
12.5  
15  
17.5  
20  
22.5  
25  
27.5  
30  
32.5  
35  
37.5  
40  
75  
60  
95  
150  
241  
376  
50  
79  
125  
201  
314  
43  
68  
107  
172  
269  
37  
59  
95  
150  
235  
N/R  
53  
83  
134  
209  
N/R  
47  
75  
120  
188  
N/R  
N/R  
68  
109  
171  
N/R  
N/R  
63  
100  
157  
N/R  
N/R  
58  
93  
145  
N/R  
N/R  
54  
86  
134  
N/R  
N/R  
N/R  
80  
N/R  
N/R  
N/R  
75  
14  
12  
10  
8
118  
188  
301  
471  
125  
118  
6
N/R = NOT RECOMMENDED  
Wire ampacity and voltage drop calculation based on copper conductors with 75 degree C insulation per  
1996 National Electrical Code (NEC) Conductors in 86 degree F ambient.  
See NEC for ampacity derating for higher ambients.  
Table 1  
WARNING  
NOTE: This table is provided as a guide only. Wire  
sizingmayberegulatedbylocalcodes. Localinspection  
is the final authority on wire sizing.  
Undersized wires can cause poor  
equipment performance, equipment  
damage, or fire. Consult the NEC, CEC or  
a qualified electrician for proper wire size.  
WARNING  
To avoid personal injury, shock, or death,  
open the electrical disconnect switch  
before electrically connecting the unit.  
Wiring must conform with National  
Electrical Code (NEC) or Canadian  
Electrical Code (CEC) and all local codes.  
WARNING  
To avoid personal injury, shock, or death,  
be sure wiring to the unit is properly  
grounded.  
WIRING  
The wiring diagram for this unit can be found on the control  
box cover. Refer to Figure 3 for field wiring connections.  
Wire size is important to ensure proper unit operation. The  
sizemustbesufficienttocarrytheminimumcircuitampacity  
listed on the unit serial data plate. Amana recommends  
sizing the wires to limit the voltage drop to a maximum of  
2% from the main breaker or fuse panel to the outdoor unit.  
Consult the NEC, CEC, and all local codes to determine  
the correct wire gauge and necessary length of run for  
proper wiring.  
START CAP  
(if present)  
DEFROST  
BOARD  
CC  
PS1  
RV  
DFS  
START RELAY  
(if present)  
F
H
C
1. To connect unit to power supply, route the power  
supply and ground wires through the high voltage  
entrance in the unit.  
RUN CAP  
T2  
L2  
T1  
L1  
2. Connect the ground wire to the ground lug and power  
supply wires to the contactor.  
W
O
Y
R
C
3. Route the low voltage wiring through the low voltage  
entrance in the unit.  
GROUND LUG  
4. Connect the low voltage wires to the terminal strip (if  
present) or to the wire leads. Route the low voltage  
wire through the wire tie provided in the unit for  
restraint.  
FIELD WIRING  
LOW VOLTAGE CONNECTION  
FIELD WIRING  
HIGH VOLTAGE CONNECTION  
5. Connect thermostat to unit. If an Amana approved  
room thermostat is not already present, install one at  
a suitable indoor location.  
Figure 3  
WARNING  
Consult the instructions packaged with the thermostat  
for mounting and location instructions. For field-sup-  
plied low voltage wiring and connections, see the last  
section of this manual.  
To avoid the risk of fire or equipment  
damage, use only copper conductors.  
6. Check all factory wiring connections to ensure none  
were loosened during shipping and handling.  
7
 
IMPORTANT: Hard start components are required when  
single-phase reciprocating compressors are used with  
indoor coils which have thermal expansion valves. Some  
units have hard start components factory installed. See  
the “Specification Sheet” for hard start component require-  
ments.  
IMPORTANT: If adding refrigerant to a system, add only  
refrigerant vapor (not liquid) through the suction valve (low  
side) on the outdoor unit. Any other practice may cause  
compressor damage.  
FINAL CHARGE ADJUSTMENT  
Matching System  
This final charge adjustment procedure is for the matched  
combination listed on the specification sheet.  
System Startup  
If the outdoor temperature is 60°F or higher, set the room  
thermostat to COOL, fan switch to AUTO, and set the  
temperature control well below room temperature.  
PRELIMINARY CHARGE ADJUSTMENT  
CAUTION  
If the outdoor temperature is below 60°F and you are  
installing a matching system, set the room thermostat to  
HEAT, fan switch to AUTO, and set the temperature  
control well above room temperature.  
If this unit has a crankcase heater (see  
SpecificationSheetorwiringdiagram)con-  
nect electrical power to the unit for four  
hours before operating the compressor.  
Failuretodosocouldresultincompressor  
damage.  
Measure the low side pressure and temperature from the  
pressure tap provided. See Figure 4. Measure the high  
side pressure and temperature from the liquid line service  
valve.  
IMPORTANT!  
During all installation and service work,  
followallregulationsoftheEnvironmental  
ProtectionAgency(EPA).Thissystemuses  
refrigerant R-22. R-22 is an HCFC  
(HydroChloro-FluoroCarbon). It is a  
violation of EPA regulations to discharge  
HCFC into the atmosphere and doing so  
may result in fines or other penalties.  
LOW SIDE  
GAUGE PORT  
LIQUID LINE  
SERVICE VALVE  
VAPOR LINE  
SERVICE VALVE  
After completing system piping, leak testing, and electrical  
connections, use an Allen wrench to carefully open the  
suction and liquid valves on the unit. These valves do not  
back seat.  
Figure 4  
WARNING  
Turn the electrical power on, and let the system run for  
several minutes. It will take some time for the refrigerant  
pressures to stabilize.  
To avoid personal injury or death, open  
eachvalveonlyuntilittouchestheretainer.  
To avoid loss of refrigerant, do not apply  
pressure to the retainer.  
Compare the operating pressures and outdoor unit amp  
draw to the numbers listed in the outdoor unit “Specifica-  
tion Sheet”. If pressures and amp draw are too low, add  
charge. If pressures and amp draw are too high, remove  
charge.  
The outdoor unit is factory-charged with enough R-22 for  
the matching indoor blower coil or matching A-coil plus 25  
feet of 3/8” liquid line. For liquid line lengths greater than 25  
feet, add 0.55 oz. of R-22 per additional foot up to 50 feet.  
For line sets over 50 feet consult an Amana distributor. For  
liquid line lengths less than 25 feet, subtract 0.55 oz. of R-  
22 per deviating foot.  
If you are not using the “Matched Combination” which is  
listed on the unit "Specification Sheet", check subcooling  
(TEV coils) or superheat (flowrator coils) as detailed be-  
low.  
AMANA-Approved Mix-Matched System Combinations  
Use Amana expanded performance multiplier tables in  
addition to the following procedures.  
CAUTION  
Using refrigerant that does not meet ARI  
Standard700maycausecompressordam-  
age and void the warranty.  
8
 
I T N U . D . O @ A T R E H P E U S  
9
 
ID COIL WITH EXPANSION VALVE  
FAN  
At stabilized cooling conditions and with an outdoor tem-  
perature of 60°F or higher, the subcooling at the outdoor  
unit liquid line service valve should be as specified in the  
specification sheet. Add or remove charge as required.  
CC  
HI-P  
LO-P  
ID COIL WITH ORIFICE  
For a proper superheat reading, measure the refrigerant  
pressure and temperature at the outdoor unit vapor line  
service valve. The superheat should be within 3°F of that  
shown on the Desired Superheat vs Outdoor Temperature  
chart (see page 9). If the superheat is higher, add charge.  
If the superheat is lower, remove charge.  
30  
60  
90  
RV  
DEFROST  
BOARD  
DEFROST TIME  
ADJUSTMENT PIN  
DFS  
EXAMPLE: The low side pressure is 84 psi. The low side  
temperature is 80°F. The outdoor temperature is 95°F.  
The indoor temperature is 85°F. By referring to a pressure  
temperature chart, you will see that 84 psi equals a  
saturated temperature of 50°F. The superheat is 80 - 50  
= 30°F. The chart shows a superheat of 20°F is ideal for  
these conditions. Since our superheat is 30 - 20 = 10°F  
higher than ideal, charge must be added.  
WC ROY  
Figure 5  
NOTE: If the time select pin remains in test position for 5  
minutes, the control will ignore test mode and assume a  
normal 90 minute defrost cycle. To over ride this time out,  
remove the select pin briefly and replace back on test.  
If the system is performing properly, reinstall the service  
port caps and the valve bonnets. With the valve opened,  
the valve bonnet is the primary seal against refrigerant  
leaks. See the table below for the torque required for an  
effective seal on the valve bonnet (1/6 turn past finger  
tight).  
WARNING  
To avoid electrical shock or death,  
disconnect the power before changing the  
defrost time cycle.  
Tubing Size  
3/8  
1/2, 5/8, 3/4  
7/8, 1 1/8  
Torque (Foot-Pounds)  
10  
14  
16  
If adjustment of the run time appears advisable:  
1. Disconnect power to outdoor unit.  
After closing the valve bonnet, perform a final refrigerant  
leak test on the valves and sweat connections. Return the  
room thermostat to the desired settings.  
2. Move the defrost time adjustment pin from 90 minutes  
to60minutesor30minutesasrequired(refertoFigure  
5).  
3. Reconnect the electrical power.  
The maximum defrost time is 14 minutes. Most defrost  
cycles are shorter.  
Troubleshooting  
SERVICING: When servicing, it may be necessary to  
rapidly advance the system through a defrost cycle. To do  
this:  
(QUALIFIED SERVICER ONLY)  
When troubleshooting, the first step should always be to  
check for clean coils, clean filter(s), and proper airflow.  
Indoor airflow should be 350 to 450 CFM per ton of cooling,  
based on the size of the outdoor unit.  
Place the defrost time adjustment pin on Test. When the  
unit starts the defrost cycle, quickly remove the time select  
pin to allow normal defrosting and defrost termination to  
proceed. The select pin may be reconnected to test or  
repeat the defrost cycle, or the pin may be placed in the  
desired time setting. (Jumping both test pins with a small  
insulated screw driver will also work.)  
If further information is needed, see the Remote Heat  
Pump Service Manual or contact your Amana distributor.  
Defrost System  
WARNING  
Your unit is equipped with a time/temperature defrost  
board. Defrosting of the outdoor coil is determined by both  
coil temperature and compressor run time. See the  
“Specification Sheet” for factory settings. Adjustment can  
be changed as required. There are 30, 60, and 90 minute  
settings available. Adjust only if geographical conditions,  
outdoor humidity, or other adverse conditions make it  
necessary.  
To avoid electrical shock or death,  
disconnect the electrical power before  
servicing.  
10  
 
THERMOSTAT* CONNECTIONS TO RH/VH HEAT PUMPS  
WITH INDOOR BBA/BBC BLOWER COIL  
Room Thermostat  
R
C/X  
Y
Y
O
O
W2  
W2  
E
E
G
G
Blower Coil R  
C
R
C
Y
O
W
Remote Unit  
Approved Thermostats: 1213403, 1213404, 1213410, 1213406  
NOTE: 1. When installing accessories, wiring may have to be modified. Follow the instructions  
in the accessory kit’s installation instructions.  
WARNING  
To avoid personal injury, shock or death, disconnect the  
electrical power before electrically connecting any  
equipment or changing any existing wiring.  
11  
 
System Checklist  
1
2
Does the condenser fan blade rotate freely, and is it tight on the shaft?  
Does the refrigerant tubing flex freely and not touch another tube to cause rub  
through?  
3
4
5
Are both indoor and outdoor sections level?  
Are the units properly supported?  
Is outdoor section properly located on concrete base or equivalent?  
Are the refrigerant lines correctly installed according to the relative position of the  
outdoor and indoor sections?  
6
7
8
9
Is the refrigerant tubing properly supported by isolation hangers?  
Is the system completely free of refrigerant leaks?  
Has the system been properly evacuated?  
10 Does the system have the correct refrigerant charge?  
Is the outdoor unit protected by the correct size time delay type fuses or breakers in  
the indoor power box?  
11  
12 Are the power supply wires to units the correct size?  
13 Are all electrical connections tight?  
14 Does the compressor sound normal?  
Check the amperage on the indoor blower motor. Is it within the limits shown on  
the nameplate of the motor?  
15  
16 Are all access panels installed and secured?  
Do controls function properly? Are manual reset switches in the reset position (high  
pressure cutouts, relays, etc.)?  
17  
Check the voltage with unit running. Does it check within the tolerance of 207 to  
18 253V for 230V, or 198 to 228V? If using 208V power indoors, have you modified  
the transformer wiring as necessary?  
19 Has the air flow across the indoor coil been checked and adjusted?  
Has the air distribution system been balanced? Are all grilles, diffusers, and  
dampers properly adjusted and locked?  
20  
21 Has the system operated at least 30 minutes before leaving the job?  
22 Does the owner understand the operation of the unit and the thermostat?  
23 Does the owner know where the filters are located?  
24 Does the owner know when and how the filter(s) should be cleaned or changed?  
25 Have the registration cards been filled out and mailed?  
26 Does the owner know whom to call for service?  
27 Has the User's Guide been filled out and left with the owner?  
®
is a trademark of Maytag Worldwide N.V. and is  
used under license to Goodman Company, L.P. All rights reserved.  
12  
 

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