Whirlpool W2PH3 User manual

INSTALLATION INSTRUCTIONS FOR
PACKAGE HEAT PUMP OR PACKAGE COOLING UNIT
HEAT PUMP/ELECTRIC COOLING SAFETY
Table of Contents
HEAT PUMP/ELECTRIC COOLING SAFETY...............................1
INSTALLATION REQUIREMENTS................................................2
Tools and Parts ............................................................................2
Location Requirements................................................................2
Ductwork Requirements ..............................................................2
Electrical Requirements ...............................................................3
INSTALLATION INSTRUCTIONS..................................................3
Inspect Shipment .........................................................................3
Place Heat Pump or Condensing Unit in Final Location .............3
Convert to Downflow ...................................................................4
Connect Condensate Drain .........................................................4
Install Ductwork............................................................................5
Install Accessory Heater ..............................................................5
Make Electrical Connections .......................................................6
Complete Installation....................................................................7
SEQUENCE OF OPERATION ........................................................7
Cooling Cycle—Cooling Only ......................................................7
Cooling Cycle—Heat Pump Only.................................................7
Heating Cycle ...............................................................................8
Defrost Cycle................................................................................8
Adjust Defrost System .................................................................9
Troubleshoot the Defrost System ................................................9
Circulating Air Blower (PSC Motor)............................................10
Circulating Air Blower (Variable Speed Motor) ..........................10
SYSTEM MAINTENANCE ............................................................11
TROUBLESHOOTING ..................................................................12
ASSISTANCE OR SERVICE.........................................................16
Accessories ................................................................................16
48373F007
Whirlpool®Home Cooling and Heating
14610 Breakers Drive
Jacksonville, FL 32258
Whirlpool®Models
W2PH3, W2PC3,
W4PH4, W4PC4
You can be killed or seriously injured if you don't immediately
You can be killed or seriously injured if you don't follow
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can
happen if the instructions are not followed.
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.”
These words mean:
follow instructions.
instructions.
DANGER
WARNING

2
INSTALLATION REQUIREMENTS
These instructions are intended as a general guide only for use by
qualified persons and do not supersede any national or local
codes in any way. Compliance with all local, state, or national
codes pertaining to this type of equipment should be determined
prior to installation.
Read this entire instruction manual, as well as the instructions
supplied in separate equipment, before starting the installation.
The installation of the heat pump or condensing unit, wiring,
warm air ducts, venting, etc., must conform to the requirements
of the National Fire Protection Association; the National Electrical
Code, ANSI/NFPA No. 70 (latest edition) in the United States, and
any state laws, local ordinances (including plumbing or
wastewater codes). Local authorities having jurisdiction should
be consulted before installation is made. Such applicable
regulations or requirements take precedence over the general
instructions in this manual.
Tools and Parts
Gather the required tools before starting installation. Read and
follow the instructions provided with any tools listed here.
Tools needed
Parts needed
Check local codes and existing electrical supply. Read “Electrical
Requirements” and “Ductwork Requirements” before purchasing
parts.
Location Requirements
■This heat pump or condensing unit is designed to be located
outdoors with sufficient clearance for free entrance to the
inlet and discharge air openings. The location must also allow
for adequate service access. See “Minimum Clearances.”
■Where possible, select a location for the heat pump or
condensing unit which is shaded from the direct rays of the
sun most of the time. North or east locations are usually most
desirable. Position the heat pump or condensing unit to avoid
direct contact with water, snow or ice from a roofline
overhead.
■The heat pump or condensing unit must be installed on a
solid, level mounting pad that will not settle or shift. Isolate
the pad from the building structure to avoid possible
transmission of sound or vibration from the heat pump or
condensing unit into the conditioned space.
■The heat pump or condensing unit foundation should be
raised to a minimum of 3" above finish grade. In areas which
have prolonged periods of temperature below freezing and
snowfall, the heat pump or condensing unit should be
elevated above the average snow line. If the heat pump or
condensing unit is to be installed on a flat roof, it should be
on a platform or other support which will raise the base a
minimum of 8" above the surface of the flat roof.
■Avoid placing a heat pump or condensing unit near areas
such as sleeping quarters or study rooms. Normal operating
sound levels may be louder than desired if the heat pump or
condensing unit is placed near certain rooms.
Minimum Clearances
Ductwork Requirements
■Install all conditioned air plenums, ducts and air filters in
accordance with NFPA 90B Standard for the Installation of
Warm Air Heating and Air-Conditioning Systems (latest
edition).
■The heat pump or condensing unit is provided with flanges
for the connection of the plenum and ducts.
■All air filters must be listed as Class 2 air filters.
■All ductwork must be made of materials and insulated to
meet local, state and national codes. Ductwork installed
outdoors must be sealed, weatherproof and protected
against physical damage. Caulking, flashing or other means
of adequately providing a permanent weather seal should be
used where duct penetrates a building or structure opening.
■⁵⁄₁₆" nut driver
■Screwdriver
■Tape measure
A. Heater compartment access panel
B. Blower access panel
C. Evaporator coil access panel
D. Filter access panel
E. Return air duct
F. S up pl y air duct
Minimum Clearance Requirements
For Optimum
Service Access For Optimum Operation
Front 48" 24"
Rear 24" 3"
Condenser End 24" 3"
Blower End 30" 0"
Top 36" 36"
30"
2"
36"
24"
48"
Minimum - 3"
Recommended - 24"
F
E
D
C
B
A
Front side of unit

3
Electrical Requirements
NOTE: All outdoor wiring must be suitable for outdoor use. Use
copper conductors only.
■All field wiring must be done in accordance with National
Electrical Code requirements, applicable requirements of UL,
or local codes, where applicable.
■Electrical wiring, disconnect means and over current
protection are to be supplied by the installer. Refer to the
rating plate for the maximum over current protection,
minimum service ampacity, and operating voltage. See the
wiring connection diagrams in “Troubleshooting.”
■This heat pump or condensing unit must be electrically
grounded in accordance with National Electric Code (ANSI/
NFPA 70) requirements, applicable requirements of UL, or
local codes, where applicable.
INSTALLATION INSTRUCTIONS
Inspect Shipment
This heat pump or condensing unit is shipped in one package,
completely assembled and wired. The indoor thermostat and
accessories are shipped in a separate carton when ordered.
1. Check the heat pump or condensing unit rating plate to
confirm specifications are as ordered.
2. Upon receipt of heat pump or condensing unit, inspect it for
possible shipping damage. Be sure to examine the heat
pump or condensing unit inside the carton if the carton is
damaged.
If damage is found, it should be noted on the carrier’s freight bill.
Damage claims should be filed with the carrier immediately.
Claims of shortages should be filed with the seller within 5 days.
NOTE: If any damages are discovered and reported to the carrier,
do not install the heat pump or condensing unit as your claim
may be denied.
Place Heat Pump or Condensing Unit in
Final Location
IMPORTANT: Place the heat pump or condensing unit in the final
location and position it in the proper orientation to the house so
that connecting ducts and electrical supplies is easily done.
Hoisting may be required.
Hoisting
An accessory lift kit must be purchased to hoist the heat pump or
condensing unit. See “Accessories.” Attach the rigging to the
lifting brackets on each corner.
NOTE: All access panels must be secured in place before
hoisting.
WARNING
Rating Plate Ampacity
Less than 15
16 - 20
21 - 30
AWG
14
12
10
Electrical Shock Hazard
Electrically ground condensing unit or heat pump.
Connect ground wire to ground terminal
marked “GROUND”.
Use copper wire for supply connection.
Correct wire gauge is shown in the chart below.
Failure to follow these instructions can result in
death or electrical shock.
31 - 50 8
Excessive Weight Hazard
Use two or more people and mechanical equipment to
lift, move and install condensing unit or heat pump.
WARNING
Failure to do so can result in back or other injury.
Excessive Weight Hazard
Use two or more people and mechanical equipment to
lift, move and install condensing unit or heat pump.
WARNING
Failure to do so can result in back or other injury.

4
The heat pump or condensing unit should be hoisted with 2 lifting
slings. Attach the slings to rigging shackles that have been
hooked through holes in the lifting brackets.
Place 2 spreaders on top of the heat pump or condensing unit to
protect it from damage from the pressure exerted by the slings.
Make sure that all equipment is rated to handle at least 750 lbs
and that the slings will not allow the heat pump or condensing
unit to shift. See “Typical Sling Configuration.”
Typical Sling Configuration
Convert to Downflow
This heat pump or condensing unit is factory-built for horizontal
airflow applications and may also be field-converted for
downflow use.
To convert to downflow use:
1. Remove the filter access panel.
2. Remove the two downflow duct cover plates (one screw and
tab for each) found in the return and supply air
compartments.
3. Using eight #10 x ³⁄₄" screws (field supplied), install the
previously removed duct covers on the horizontal return and
supply air openings. Use the pilot holes provided.
4. Reinstall the filter access panel.
Connect Condensate Drain
The condensate drain outlet is a ³⁄₄" threaded PVC fitting located
at the bottom on the side of the heat pump or condensing unit. A
³⁄₄" drain line with trap must be installed on all applications to
avoid accumulation of condensate under or around the heat
pump or condensing unit.
Install Condensate Trap
1. Construct the condensate trap from PVC tubing as shown in
“Condensate Trap Construction.”
NOTES:
■The condensate trap allows a standing column of water of
at least 2" (50 mm).
■The top of the drain trap inlet must be at least least 1"
(25 mm) above the top of the drain trap outlet.
■The trap should be installed as close to the heat pump or
condensing unit as possible, while still providing proper
drainage.
■For service access, do not block heat exchanger access
panel or the filter access panel with the drain line.
2. Thread the drain assembly into the ³⁄₄" PVC fitting.
NOTE: Do not glue the threaded fitting so it can be removed
during servicing of unit.
3. Run the drain line to an open drain or other suitable disposal
point.
Condensate Trap Construction
A. Spreaders
B. Cables
C. Lifting bracket (accessory lift kit)
D. Sheet metal
screw
E. Pallet
A. Horizontal return and supply air openings
B. Filter access panel
C. Downflow duct cover plates
D
E
ABC
C
A
B
A. ³⁄₄ " PVC fitting (threaded) drain
condensate connection
B.
³⁄₄ " drain pipes, field provided
C. Drain trap outlet
D. Drain trap inlet
A
B
1" Min.
12" Max.
2" Min.
3" Min.
C
D

5
Install Ductwork
■Install ductwork in accordance with NFPA 90B and any local
codes.
■The use of flexible, noncombustible connectors between the
main trunk ducts and the supply and return air plenums is
recommended to minimize vibration transmission.
■Plenums must be individually sealed to heat pump or
condensing unit casing with ducts terminating inside the
structure.
■Flashing used to cover ductwork must permit removal of
access panels and top. See “Minimum Clearances” in the
“Locations Requirements” section.
Filters
Filters are not supplied with these heat pumps or condensing
units; however, filters must be used. It is the installer’s
responsibility to install a filter rack with the ductwork and to
install properly sized filters in accordance with the Minimum
Required Surface Area for Disposable Filters chart.
All return air must pass through a filter before entering the heat
pump or condensing unit. An electronic air cleaner, filter rack or
other accessible filter arrangement must be installed in the return
air ductwork. Minimum recommended filter areas are listed in the
Minimum Required Surface Area for Disposable Filters chart, and
are based on a face velocity of 325 ft (99.1 m) per min. for
disposable filters and 525 ft (160 m) per min. for cleanable filters.
Install Accessory Heater
1. Disconnect power.
2. Remove the heater compartment access panel.
3. Remove the heater blockoff by removing the 4 screws
holding it in place.
4. Insert the heater kit into the control panel and fasten in the
same mounting holes.
5. Disconnect the plugs connecting the no-heat wire harness to
the control assembly wire harness.
6. Remove the no-heat wire harness plugs.
7. Plug the heater wiring harness into the control assembly wire
harness.
8. See “Make Electrical Connections” for instructions on
connecting power to the heater kit.
9. Replace the heater compartment access panel.
10. Reconnect power.
Minimum Required Surface Area for Disposable Filters
Nominal Cooling Filter Area (sq. ft)
24,000 2.67
30,000 3.33
36,000 4.00
42,000 4.67
48,000 5.33
60,000 6.67
A. Blower access panel
B. Heater blockoff
C. Heater kit
D. Heater compartment access panel
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
BC
D
A
A. No-heat wire harness
B. Control assembly wire harness
C. Heater wire harness
A
B
C

6
Make Electrical Connections
IMPORTANT:
■Electrical wiring, disconnect means and over-current
protection are to be supplied by the installer. Refer to the
rating plate for the maximum over-current protection,
minimum circuit ampacity and operating voltage. See the
wiring connection diagrams in “Troubleshooting.”
■Install an adequate sized branch circuit disconnect,
according to the NEC, within sight of and readily accessible
to heat pump or condensing unit.
■The cable or conduit and fittings connected from the
disconnect switch to the heat pump or condensing unit wiring
connections shall be rated for outdoor use.
■Check the heat pump or condensing unit rating plate to
determine whether the system is rated single phase or three
phase and follow the appropriate instructions for connecting
the pigtail leads.
■Plug unused side entry holes with field-supplied plugs to
prevent moisture from entering the heat pump or condensing
unit.
■Low voltage wiring must be separated from line voltage
wiring.
Line Voltage Connections
1. Disconnect power.
2. Remove the blower access panel.
3. Remove the heater compartment access panel.
4. Route the field supply wires through the line voltage conduit
opening to the electrical connection area, providing sufficient
length to connect to the pigtail leads.
Single Phase Units
■Connect the field supply wires (L1, L2) to the 2 black pigtail
leads using UL listed wire nuts.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
WARNING
Rating Plate Ampacity
Less than 15
16 - 20
21 - 30
AWG
14
12
10
Electrical Shock Hazard
Electrically ground condensing unit or heat pump.
Connect ground wire to ground terminal
marked “GROUND”.
Use copper wire for supply connection.
Correct wire gauge is shown in the chart below.
Failure to follow these instructions can result in
death or electrical shock.
31 - 50 8

7
Three Phase Units
■Connect the field supply wires (L1, L2, L3) to the 3 black
pigtail leads using UL listed wire nuts.
NOTE: Check compressor operation for proper rotation. If the
rotation is not correct, then reverse any two leads (for example:
L1 and L2). Incorrect rotation is identified by excessive sound or
improper system pressures.
Line and Low Voltage Connections
1. Route the low voltage supply wires through the low voltage
entry opening to the low voltage connection area providing
sufficient length to connect to the low voltage pigtail leads.
2. Using UL listed wire nuts, connect the low voltage supply
wires to the matching colors of the low voltage leads.
3. Replace the heater compartment access panel.
4. Replace the blower access panel.
208 Volt Conversion
1. Disconnect power.
2. Remove the heater compartment access panel.
3. Move the black wire lead from the 240-volt terminal on the
transformer to the 208-volt terminal (center tap) on the
transformer. See the wiring connection diagrams in
“Troubleshooting.”
4. Replace the heater compartment access panel.
Complete Installation
IMPORTANT: Do not use this heat pump or condensing unit if
any part has been under water. Immediately call a qualified
person to inspect the heat pump or condensing unit and to
replace any part of the control system and gas control which has
been under water.
1. Check to be sure you have all of your tools.
2. Dispose of/recycle all packaging materials.
3. Check the heat pump or condensing unit in its final location.
SEQUENCE OF OPERATION
Cooling Cycle—Cooling Only
Upon cooling demand, the thermostat closes circuit R to Y.
Closing R to Y energizes the package unit for cooling operation
and closes the contactor, starting the compressor and outdoor
fan. The thermostat automatically closes R to G circuit which also
brings on the indoor fan at the same time. Upon satisfying
cooling demand, the thermostat will open the above circuits nd
open the main contactor, stopping the compressor and outdoor
fan. If equipped with a delay timer, the blower will continue to
operate for 60 to 90 seconds which improves system efficiency.
Cooling Cycle—Heat Pump Only
Upon cooling demand, the thermostat closes circuit R to O and Y.
Closing R to O and Y energizes the reversing valve for cooling
operation and closes the heat pump contactor, starting the
compressor and outdoor fan. The thermostat automatically
closes R to G circuit, which also brings on the indoor fan at the
same time. Upon satisfying cooling demand, the thermostat will
open the above circuits and open the main contactor, stopping
the compressor and outdoor fan. If the indoor unit is equipped
with a delay timer, the blower will continue to operate for 60 to
90 seconds, which improves system efficiency.
A. Line voltage supply conduit
B. Ground pigtail connection
C. Line voltage field supply connections
D. Electrical connection box
E. Low voltage connections
F. Low voltage supply conduit
D
C
B
A
E
F
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or electrical shock.
Replace all parts and panels before operating.

8
Heating Cycle
Upon heating demand, the thermostat closes circuit R to Y, which
closes the heat pump contactor, starting the compressor and
outdoor fan. The reversing valve is not energized in the heating
mode. The thermostat again automatically brings on the indoor
fan at the same time. Upon satisfying heating demand, the
thermostat opens the above circuits and stops heat pump
operation.
Defrost Cycle
If the outdoor ambient conditions are such that frost forms on the
outdoor coil, the defrost control monitors a defrost cycle. It then
runs the defrost cycle as ambient temperatures require.
The defrost control is time/temperature initiated and temperature
terminated with a maximum defrost time (time-out) of 10 minutes.
The time between defrost cycles is preset at 60-minute intervals
at the factory, but can be field adjusted between 30, 60, or
90 minutes. To adjust the time period between defrost cycles,
see “Adjust Time Between Defrost Cycles” in the “Circulating Air
Blower” section.
The defrost control will initiate a defrost cycle when the selected
time period has elapsed and the defrost sensor sees a
temperature below freezing. At the start of a defrost cycle, the
defrost control will energize the reversing valve solenoid, shifting
the reversing valve and de-energizing the outdoor fan. The
defrost relay will also close, energizing temporary heat for
increased comfort during defrost (if the indoor unit is so
equipped). The heat pump will remain in defrost until the defrost
sensor has determined that the frost has been removed from the
coil or a 10-minute period has elapsed, whichever comes first.
Defrost Thermostat
The defrost thermostat is located on the liquid line between the
check/expansion valve and the distributor. When defrost
thermostat senses 42ºF or cooler, the thermostat contacts close
and send a signal to the defrost control board to start the defrost
timing. It also terminates defrost when the liquid line warms up to
70ºF.
Defrost Control
The defrost control board includes the combined functions of the
time/temperature defrost control, defrost relay, diagnostic LEDs
and terminal strip for field wiring connections. See “Defrost
Control Board” in the “Adjust Defrost System” section.
The control provides automatic switching from normal heating
operation to defrost mode and back. During compressor cycle
(call for defrost), the control accumulates compressor run times
at 30, 60 or 90 minute field-adjustable intervals. If the defrost
thermostat is closed when the selected compressor run time
interval ends, the defrost relay is energized and defrost begins.
Defrost Control Timing Pins
Each timing pin selection provides a different accumulated
compressor run time period during one thermostat run cycle. This
time period must occur before a defrost cycle is initiated. The
defrost interval can be adjusted to 30 (T1), 60 (T2) or 90 (T3)
minutes. See “Defrost Control Board” in the “Adjust Defrost
System” section. The defrost timing jumper is factory-installed to
provide a 60-minute defrost interval. If the timing selector jumper
is not in place, the control defaults to a 90-minute defrost
interval. The maximum defrost period is 14 minutes and cannot
be adjusted.
A test option is provided for troubleshooting. The test mode may
be started any time the unit is in the heating mode and the
defrost thermostat is closed or jumpered. If the jumper is in the
test position at power-up, the control will ignore the test pins.
When the jumper is placed across the Test pins for 2 seconds,
the control will enter the defrost mode. If the jumper is removed
before an additional 5-second period has elapsed (7 seconds
total), the unit will remain in defrost mode until the defrost
thermostat opens or 14 minutes have passed. If the jumper is not
removed until after the additional 5-second period has elapsed,
the defrost will terminate and the test option will not function
again until the jumper is removed and re-applied.
Compressor Delay
The defrost board has a field-selectable function to reduce
occasional sounds that may occur while the package unit is
cycling in and out of the defrost mode. The compressor will be
cycled off for 30 seconds while going in and out of the defrost
mode when the compressor delay jumper is removed.
NOTE: The 30-second “off” cycle is not functional when
jumpering the TEST pins.
Time Delay
The time delay is 5 minutes long. The delay helps to protect the
compressor from short cycling in case the power to the package
unit is interrupted or a pressure switch opens. The delay is
bypassed by placing the timer select jumper across the TEST
pins for 0.5 seconds.
Pressure Switch Circuit
The defrost control includes LO-PS terminals to connect an
optional low pressure (loss of charge pressure) switch. A high
pressure switch (optional) can be connected to the HI PS
terminals. See “Defrost Control Board” in the “Adjust Defrost
System” section.
During a single demand cycle, the defrost control will lock out
the package unit after the fifth time that the circuit is interrupted
by any pressure switch wired to the control board. In addition,
the diagnostic LEDs will indicate a locked-out pressure switch
after the fifth occurrence of an open pressure switch. See
Defrost Control Board Diagnostic LEDs chart later in this section.
The package unit will remain locked out until power to the board
is interrupted, then re-established, or until the jumper is applied
to the TEST pins for 0.5 seconds.
NOTE: The defrost control board ignores input from the low
pressure switch terminals during:
■TEST mode
■Defrost cycle
■90-second start-up period
■First 90 seconds after the reversing valve switches heat/cool
modes

9
NOTE: If the TEST pins are jumpered and the 5-minute delay is
being bypassed, the LO PS terminal signal is not ignored during
the 90-second start-up period.
NOTES:
■Because the pressure switches are monitored only when “Y1”
(Input) is active, the code for pressure switch open will not be
seen when “Y1” is off. Instead, the “Normal Operation” or
“Short Cycle Lockout” code will be seen.
■When a pressure switch opens and causes a short cycle
lockout, the pressure switch-open code will be seen until it
closes, then the short cycle lockout code will flash unless it
has already expired.
Adjust Defrost System
Defrost Control Board
Optional high pressure switch connections
NOTE: To add the pressure switch, remove the factory-installed
jumper.
Adjust Time Between Defrost Cycles
1. Disconnect power.
2. Remove the heater compartment access panel.
3. Adjust the time period between defrost cycles by placing the
defrost time plug in the proper position. See “Defrost Control
Board.”
■For 30-minute intervals between defrost cycles, connect
the Defrost Time Setting Plug to the pins corresponding
to 30.
■For 60-minute intervals between defrost cycles, connect
the Defrost Time Setting Plug to the pins corresponding
to 60 (this setting is the factory preset setting).
■For 90-minute intervals between defrost cycles, connect
the Defrost Time Setting Plug to the pins corresponding
to 90.
4. Replace the heater compartment access panel.
5. Reconnect power.
Troubleshoot the Defrost System
Diagnostic LEDs
The defrost board uses 2 LEDs for diagnostics. The LEDs flash a
specific sequence according to the condition.
Defrost Control Board Diagnostic LEDs
Mode Green LED
(DS2) Red LED (DS1)
No Power to Board Off Off
Normal Operation/Power to Board Simultaneous Slow Flash
Short Cycle Lockout Alternating Slow Flash
Low Pressure Switch Fault Off Slow Flash
Low Pressure Switch Lockout Off On
High Pressure Switch Fault Slow Flash Off
High Pressure Switch Lockout On Off
A. Defrost time setting pins
B. Test pins
C. Compressor delay pins
D. Reversing valve
E. Low pressure switch (optional)
F. Defrost thermostat
G. High pressure switch (optional)
H. Diagnostic LEDs
I. Low voltage terminal strip
connections
K1 Relay
K2 Relay
FAN
DS1
L
24V
P2
P5
O-OUT
DF
Y1-OUT
HI-PS
U1 U2
DS2
K3 Relay
P6
TST PS DF C R O Y1
C5
LO-PS
C2
P1
30
60
90
TEST
W1
C
L
R
Y1
O
H
I
A
B
C
D
E
F
G
Defrost Control Board Diagnostic LED
Mode Green LED (DS2) Red LED (DS1)
No Power to Board Off Off
Normal Operation/Power to Board Simultaneous Slow Flash
Short Cycle Lockout Alternating Slow Flash
Low Pressure Switch Fault Off Slow Flash
Low Pressure Switch Lockout Off On
High Pressure Switch Fault Slow Flash Off
High Pressure Switch Lockout On Off
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.

10
NOTES:
■Because the pressure switches are monitored only when “Y1”
(Input) is active, the code for pressure switch open will not be
seen when “Y1” is off. Instead, the “Normal Operation” or
“Short Cycle Lockout” code will be seen.
■When a pressure switch opens and causes a short cycle
lockout, the pressure switch-open code will be seen until it
closes, then the short cycle lockout code will flash unless it
has already expired.
1. Disconnect power.
2. Remove the heater compartment access panel.
3. Reconnect power and set thermostat for heating operation.
4. Observe LEDs and compare to Defrost Control Board
Diagnostic LEDs chart.
5. If a system failure is indicated, take appropriate action to
correct.
6. Turn off thermostat and disconnect power.
7. Replace the heater compartment access panel.
8. Reconnect power.
Circulating Air Blower (PSC Motor)
The circulating air blower is controlled by a timing circuit in the
blower control. Timings are not adjustable.
There is no blower “on” delay after a call for heating or cooling.
Blower “off” delay is 90 seconds after the thermostat is satisfied.
NOTE: No blower speed adjustments are required.
Circulating Air Blower (Variable Speed Motor)
Packaged units equipped with a variable speed circulation air
blower motor will deliver a constant airflow within a wide range of
external static pressures.
Soft Start/Stop
The variable speed motor will slowly ramp up to normal operating
speed. This minimizes noise and increases comfort by
eliminating the initial blasts of air encountered with standard
motors. At the end of a cooling or heating cycle, the motor will
slowly ramp down.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
Blower Speed Chart (PSC Motor)
for Heat Pump and Cooling Only Models
Unit Factory shipped Settings
Cooling Input (BLK)
24 L (Low)
30 M (Medium)
36 H (High)
42 L (Low)
48 M (Medium)
60 H (High)

11
Circulation Airflow Adjustments
The controls include a variable speed motor interface board. The
ADJUST tap can be used to raise (+) or lower (-) the airflow by
15%.
Heating and Cooling Airflows
The packaged units are factory set for the correct heating and
cooling airflows. However, airflow changes can be made by
moving the position of the HEAT and COOL taps. See Blower
Speed Chart (Variable Speed Motor) for Heat Pump and Cooling
Only Models.
Continuous Blower
The comfort level of the living space can be enhanced when
using this feature by allowing continuous circulation of air
between calls for cooling or heating. The continuous circulation
of air occurs at half the full cooling airflow rate. To use this
feature, place the thermostat fan switch into the ON position.
Cooling Airflow Ramp Up
At the beginning of a call for cooling, the blower will run at 80%
of full airflow for 7¹⁄₂ minutes. This improves the system’s
moisture removal and saves blower power during cooling start.
Reduced Airflow Operation (Dehumidification)
For situations where humidity control is an issue, the variable
speed motor can be connected to operate at a 25% reduction in
the normal airflow rate. The variable speed motor interface board
provides a connection for a humidistat on the HUM terminal.
When a humidistat is connected, the dehumidifier resistor on the
interface must be cut. The humidistat should be wired to open
during high humidity, which will reduce blower airflow.
ADJUST, HEAT, and COOL Taps and Dehumidify Resistor
SYSTEM MAINTENANCE
■Leaves and other large obstructions should be removed from
the heat pump surfaces without damaging the fin surface of
the coil.
■Routinely clean or change the indoor air filter. Should the
indoor coil become dirty, thus restricting airflow, call a
qualified service person to clean the coil surface.
■An annual inspection by a qualified person should be
performed to ensure continued quality performance.
A. Dehumidify LED
B. Dehumidify resistor
DEHUMIDIFY
CUT TO ENABLE
COOLHEATADJUST
NORM A
B
C
D
A
B
C
D
(+)
(–)
TEST
D1
A
B
Blower Speed Chart (Variable Speed Motor) for Heat Pump and Cooling Only Models
Model
Nominal
Cooling
kBtu Heating Size kW Motor HP ADJUST Setting HEAT Setting COOL Setting CFM A CFM B CFM C CFM D
24 5-10 ¹⁄₃ NORM B B 1,000 800 600 900
30 5-10 ¹⁄₃ NORM A A 1,000 800 600 900
36 5-15 ¹⁄₂ NORM A A 1,200 1,000 800 1,100
42 5-20 ³⁄₄ NORM C C 1,800 1,600 1,400 1,200
48 5-20 ³⁄₄ NORM B B 1,800 1,600 1,400 1,200
60 5-20 ³⁄₄ NORM A A 1,800 1,600 1,400 1,200

12
TROUBLESHOOTING
Wiring Connection Diagram—Single Phase Heat Pump (PSC Motor)
208/230V-1-60
GW1 CRO
BK
R
Y
R
L1
T1
T2
L2
C
H
F
Dual Capacitor
Transformer
CS
R
W
L2
L1
BK
BR
PR
R
R
BK
208V
240V
24V
S4
S1
K1
T1
B3
B4
K1-2
C12
B1
K1-1
BU
Y
C4 HML
C
NO NC
C
P-2
A15
NC C
CMC1
BK
C
G
XFMR-R
R
XFMR-C
W1
C L
R
O
Y1
Fan
O-OUT
LO-PS
DF
HI-PS
COMMON
Y1 OUT
CMC1
S6
L1
24 V
Fuse
Y
A15
W2
R
Y
BU W
G
OR
RBU
BU
Y
BU
BK
BK
Defrost Control
BU
W
P-1
P-2 P-4
P-6 P-5
Reversing
Valve
Defrost
Thermostat
Defrost Control
High Pressure
Switch
(if used)
Contactor
Blower Control
Indoor Blower Motor
Capacitor
Condenser Fan Motor
Blower Control
Compressor Contactor
Compressor
Compressor Contactor
Thermostat
Blower Speed Chart for Heat Pump and Cooling Only Models Unit Factory shipped Settings Cooling Input (BLK) 24 L (Low) 30 M (Medium) 36 H (High) 42 L (Low) 48 M (Medium) 60 H (High) NOTE: No blower speed adjustments are required

13
Wiriing Connection Diagram—Single Phase Heat Pump (Variable Speed Motor)
*
*
Blower Speed Chart (Variable Speed Motor) Unit ADJUST HEAT COOL 24 NORM B B 30 NORM A A 36 NORM A A 42 NORM C C 48 NORM B B 60 NORM A A
Condenser Fan Motor
Transformer
Y
BU
BU
BU
P-2
K1-2
Compressor Contactor
B4
PR
BR
BK
BK
BK
BK
K1-1
Compressor Contactor
Defrost Control
CMC1
Indoor
Blower
Motor
P-1
BK BK
BK
BK
L1
208/230V-1-60
Dual Capacitor
Y
W
R
R
C12
L2
T2
T1
L1
Compressor
B1
C
R
S
F
C
H
PCO
(if used)
NC C
B3
BU
24V
240V
208V
R
Reversing
Valve
High
Pressure
Switch
S4
NOTE: Connection must be jumpered when pressure switch is not used.
Defrost Control
CMC1
Defrost
Thermostat
S6
P-4
Contactor
Low
Pressure
Switch
S79 L1
BU
BK BK BK BK
Y
Y
Y
Y
Y
K1
Fan
O-OUT LO-PS DF COMMON Y1 OUT HI-PS
24V
W1
C
L
R
O
Y1
W
BU
R
OR
Y
W
R
P-6 P-5 BU
R
YY
R
C
A132
Diagnostic
Module
Thermostat
S1 G
W1
CROY
W2
L2
Y
HUM R C1 EM W1 O Y2 Y1 G
ICM Board
A54
Y
G
OR
W
BU
R
B3
T1
Indoor Blower
Motor
ADJUST HEAT COOL
NORM
+
TEST
A B C D
A B C D

14
Wiring Connection Diagram—Single Phase Cooling Only Models (PSC Motor)
W
G
R
Y
BU
Thermostat
Y
Y
High Pressure
Switch
(if used) Y
S4
P - 5 P - 6
S1 CYRG
W1
Contactor
K1
BU
BU
R
G
Fuse
XFMR-R XFMR-C
R
GCA15
Blower Control
BU
BU
P - 4
BU
R
Y
W
BK 240V
208V
24V
Transformer
BK
BK
RP - 3
A15 Blower Control
C
NC
NO
CL
M
H
B3
C4
Indoor Blower Motor
Capacitor
Condenser Fan Motor B4
BK
BK
R
Y
Compressor
Compressor Contactor
R
BR
PR
K1 - 2
P - 2
L2
L2
T2
K1 - 1 Compressor Contactor
BK
Dual Capacitor
C12
R
S
C
C
F
H
T1
P - 1
B1
208/230V - 1 - 60
L1
L1
T1
Blower Speed Chart for Heat Pump and Cooling Only Models Unit Factory shipped Settings Cooling Input (BLK) 24 L (Low) 30 M (Medium) 36 H (High) 42 L (Low) 48 M (Medium) 60 H (High) NOTE: No blower speed adjustments are required

15
Wiring Connection Diagram—Single Phase Cooling Only Models (Variable Speed Motor)
Thermostat
S1
GW1 C
R
BK
Y
G
W
R
BU
Y
P-6 P-5
BK BK
S79
S4
Low Pressure Switch
(if used)
High Pressure
Switch
Y
Y
Contactor
Y
Y
BU
R
Y
R
C
A132
Diagnostic
Module
K1
BU
BU
P-4
ADJUST HEAT COOL
NORM
+
TEST
A B C D
A B C D
ICM Board
A54
HUM R C1 EM W1 O Y2 Y1 G
B3
Indoor Blower
Motor
R
BU
W
OR
Y
G
Transformer
BU
24V
240V
208V
R
T1
Y
B4
PR
BR
BK
BK
BK
BK
K1-1
Compressor Contactor
Indoor
Blower Motor
P-1
BK
BK
L1
208/230V-1-60
Dual Capacitor
W
R
R
C12
T2
T1
L1
Compressor
B1
C
R
S
F
C
H
PCO
(if used)
B3
BK
K1-1
Compressor Contactor
L2
P-2
Y
L2
Y
Factory Shipped Settings
Unit ADJUSTHEAT COOL 24 NORM B B 30 NORM A A 36 NORM A A 42 NORM C C 48 NORM B B 60 NORM A A

Typical Low Voltage Connections
NOTE: W1 and W2 can be used to stage electric heat accessory on 15 kw and 20 kw models. The 5 kw, 7.5 kw and 10 kw heater
accessories function off of W1 only.
ASSISTANCE OR SERVICE
If you need further assistance, you can write to the below
address with any questions or concerns:
Whirlpool®Home Cooling and Heating
14610 Breakers Drive
Jacksonville, FL 32258
Please include a daytime phone number in your correspondence.
Accessories
To order accessories ask for the appropriate part number listed
below or contact your Whirlpool®Home Cooling and Heating
dealer.
R R
CC
YY
W1
W1
W
G G
W2
W2
OO
Without Economizer
Thermostat Outdoor Unit
C C
RR
Y1
Y
WW1
W1
G G
Y2
W2
W2
O O
Thermostat Outdoor Unit
With Economizer
Economizer
Blue
White
Yellow
Orange
Green
Black
Part
Number Accessory Model(s)
48193-001 ALIFT801-1
Lifting Bracket Kit All
Electric Heater Kits
Cat.
No. Model No. Description Used On
10W47 PHK05BP-1 5 kw Electric Heater Kit All
10W48 PHK07BP-1 7.5 kw Electric Heater Kit All
10W49 PHK10BP-1 10 kw Electric Heater Kit All
10W50 PHK15CP-1 15 kw Electric Heater Kit 36-60
10W51 PHK20CP-1 20 kw Electric Heater Kit 42-60
48373F007
© 2007. Whirlpool Corporation
All rights reserved.
® Registered trademark/TM Trademark of Whirlpool, U.S.A.
All trademarks are owned by their respective companies.
Manufactured under license by Watsco, Inc., Coconut Grove, Florida 10/07 Printed in U.S.A.