Arcoaire PHJ4 14 SEER Single-Packaged Heat Pump System Owner’s Manual

PHJ4 14 SEER Single-Packaged Heat Pump System
Owner’s Manual

Fig. 1 – PHJ4 and WJH4

Our products are designed, tested, and built-in accordance with DOE standardized procedures; however, actual operating results and efficiencies may vary based on manufacturing and supplier tolerances, equipment configuration, operating conditions, and installation practices.

Safety Considerations

Improper installation adjustment, alteration, service, maintenance, or use can cause an explosion, fire, electrical shock, or other conditions which may cause death, personal injury,  or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in the literature and attached to the unit. Consult local building codes, the current editions of the National Electrical Code (NEC) NFPA 70 and NFPB 90B – Installation Warm Air Heating and A/C System (Residential).
In Canada refer to the current editions of the Canadian Electrical Code CSA C22.1.

Recognize safety information. This is the safety alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards that could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions that will result in enhanced installation, reliability, or operation.
NOTE: Installer: This manual should be left with the equipment user.

WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, and/or property damage.
Installation and servicing of this equipment can be hazardous due to mechanical and electrical components. Only trained and qualified personnel should install, repair, or service  this equipment.
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death, or property damage.
Do not use this unit if any part has been underwater. Immediately call a qualified service technician to inspect the unit and replace any part of the control system which has been underwater.

WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before performing recommended maintenance, be sure the main power switch to the unit is turned off and a lock-out tag is installed.

CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses, and gloves when handling parts and servicing this unit.

Operating Your Unit

The operation of your heat pump system is controlled by the indoor thermostat. You simply adjust the thermostat and it maintains the indoor temperature at the level you select. Most thermostats of heat pump systems have 3 controls: a temperature control selector, a FAN control, and a SYSTEM or MODE control. Refer to your thermostat owner’s manual for more information.

To better protect your investment and to eliminate unnecessary service calls, familiarize yourself with the following facts:

1. During heating, increasing the desired temperature setting by more than 2°F (1.1°C) may cause the supplemental heaters to be turned on for a short period of time to satisfy the demand. Needless use of the supplementary heat reduces potential energy savings.
2. Ice or frost tends to form on the coil during winter heating operations. Your unit is designed to automatically melt the ice. When in this defrost cycle, it is normal for steam or fog to rise from the outdoor unit, and for water to drain from the outside of the unit. Do not be alarmed!

To start the unit:

1. Turn on the electrical power supply to the unit.
2. Set MODE control to the desired mode and select temperature.

To shut off the unit:
NOTE: If the unit is being shut down because of a malfunction, call your dealer as soon as possible.

1. Set system MODE control to OFF.
2. Turn off the electrical power supply to the unit.

Cooling Mode
With the SYSTEM or MODE control set to COOL, your unit will run in cooling mode until the indoor temperature is lowered to the level you have selected. On extremely hot days, your unit will run for longer periods at a time and have shorter “off” periods than on moderate days.

Heating Mode
With the SYSTEM or MODE control set to HEAT, your unit will run in heating mode until the room temperature is raised to the level you have selected. Of course, your unit will run for longer periods to maintain a comfortable environment on cooler days and nights than on moderate ones.

Supplemental Heat
Your unit is your primary heating source. Your system may also be equipped with a supplemental heating source such as electric heat. On cold days and nights, your system will automatically turn on the supplemental heat, as needed, in order to maintain the level of comfort you have selected.
When your heat pump needs additional heat to keep you comfortable your thermostat will turn on the supplemental heat (if equipped). When the thermostat calls for supplemental heat, you may notice the indoor fan increase its speed.

Demand Defrost Mode
The defrost mode is factory set to an initial 60-minute time interval. It may also be adjusted to an initial interval of 30, 90, or 120 minutes. During operation, the control optimizes the current defrost time based on the previous defrost interval and previous defrost period. If the previous defrost period is less than 2 minutes for two consecutive defrost cycles the control will lengthen the defrost interval by 15 minutes, up to a maximum of 120 minutes or 30 minutes greater than the original setpoint, whichever comes first. If the previous defrost period is more than 5 minutes for two consecutive defrost cycles the control will shorten the defrost interval by 15 minutes, down to a minimum of  30 minutes or 30 minutes from the original setpoint, whichever is first. After the defrost condition is satisfied, or after a maximum of 10 minutes in defrost mode, the unit will resume normal heating operation.

Emergency Heating Mode
In the event of primary unit heat failure, the emergency heat mode allows your supplemental heating source to keep your home or office warm until your unit can be serviced.  Contact your dealer in the event of primary unit heat failure.
During Emergency Heat, your thermostat will lock out the heat pump and turn on the supplemental heat, if equipped. You may notice the indoor fan increases its speed.

Maintenance and Service

This section discusses maintenance that should be performed by your dealer and the care you, as the owner, may wish to handle for your new unit.
Routine Maintenance
All routine maintenance should be handled by skilled, experienced personnel. Your dealer can help you establish a standard procedure.
To assure proper functioning of the unit, the flow of condenser air must not be obstructed from reaching the unit. Clearance from the top of the unit is 48 in. (1219 mm). Clearance of at least 36 in. (914 mm) is required on sides except for the power entry side (42 in. [1067 mm] clearance).

Maintenance and Care for the Equipment Owner
Before proceeding with those things you might want to maintain yourself, please carefully consider the following:

WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK, CUT HAZARD
Failure to follow this warning could result in personal injury, death or property damage.

1. TURN OFF ELECTRICAL POWER TO YOUR UNIT BEFORE SERVICING OR PERFORMING MAINTENANCE AND INSTALL A LOCK-OUT TAG.
2. When removing access panels or performing maintenance functions inside your unit, be aware of sharp sheet metal parts and screws. Although special care is taken to reduce sharp edges to a minimum, be extremely careful when handling parts or reaching into the unit.

Air Filters
The air filter(s) should be checked every 3 or 4 weeks and changed or cleaned whenever it becomes dirty. Dirty filters produce excessive stress on the blower motor and can cause the motor to overheat and shut down.
This unit must have an air filter in place before it can be operated. These filters should be located in at least one of two places. In many applications, the installer will provide return air filter grilles mounted on the wall or ceiling of the conditioned structure. In the instance of filter grilles, the filters can simply be removed from the grille and replaced.

Table 1 indicates the correct indoor filter size for your unit.
Table 1 – Indoor Air Filter Data

When installing the new filter(s), note the direction of the airflow arrows on the filter frame.
If you have difficulty locating your air filter(s) or have questions concerning proper filter maintenance, contact your dealer for instructions. When replacing filters, always use the same size and type of filter that was supplied originally by the installer.

WARNING
FIRE AND UNIT OPERATION HAZARD
Failure to follow this warning could result in personal injury, death, or property damage.
Never operate your unit without filters in place. An accumulation of dust and lint on internal parts of your unit can cause a loss of efficiency.

Fans and Fan Motor
Periodically check the condition of fan wheels and housings and fan-motor shaft bearings. Contact your dealer for the required annual maintenance.
Indoor and Outdoor Coils
Cleaning of the coils should only be done by qualified service personnel.
Contact your dealer for the required annual maintenance.
Condensate Drain
The drain pan and condensate drain line should be checked and cleaned at the same time the cooling coils are checked by your dealer.
Compressor
All compressors are hermetically sealed and do not require periodic maintenance.

Condenser Fan

WARNING
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury, death, or property damage.
Do not poke sticks, screwdrivers, or any other object into revolving fan blades.

The fan must be kept free of all obstructions to ensure proper cooling.
Contact your dealer for any required service.
Electrical Controls and Wiring
Electrical controls are difficult to check without proper instrumentation.
If there are any discrepancies in the operating cycle, contact your local dealer and request service.
Refrigerant Circuit
The refrigerant circuit is difficult to check for leaks without the proper equipment. If inadequate cooling is suspected, contact your local dealer for service.

WARNING
EXPLOSION, BURN, AND ENVIRONMENTAL HAZARD Failure to follow this warning could result in personal injury, death, or property damage.
The system is under pressure. Relieve pressure and recover all refrigerant before system repair or final unit disposal. Use all service ports and open all flow-control devices, including solenoid valves.

Unit Panels
After performing any maintenance or service on the unit, be sure all panels are fastened securely in place to prevent rain from entering the unit cabinet and to prevent disruption of the correct unit airflow pattern.
Regular Dealer Maintenance (Refer to Table 2)
In addition to the type of routine maintenance you might be willing to perform, your unit should be inspected regularly by a properly trained service technician. An inspection  (preferably each year) should include the following:

1. Inspection and, if required, cleaning of the outdoor and indoor coils.
2. Inspection and, if required, cleaning of the indoor coil drain pan.
3. Inspection and cleaning of blower wheel housing and motor.
4. Inspection of all supply and return air ducts for leaks, obstructions, and insulation integrity. Any problems found should be resolved at this time.
5. Inspection of the unit base to ensure that no cracks, gaps, etc., exist which may cause a hazardous condition.
6. Inspection of the unit casing for signs of deterioration.
7. Inspection of all electrical wiring and components to assure proper connection.
8. Inspection for leaks in the refrigerant circuit. Pressure and temperature check to determine the appropriate refrigerant charge.
9. Operational check of the unit to determine working conditions.
   Repair or adjustment should be made at this time.

Your servicing dealer may offer an economical service contract that covers seasonal inspections. Ask for further details.
Complete service instructions can be found in the unit Installation, Start-up and Service Instructions.

Warranty Certificate
Your unit has a limited warranty. Be sure to read the warranty carefully to determine the coverage for your unit.

Before you call for service…
…check for several easily solved problems.
If insufficient heating or cooling is suspected: ( ) Check for sufficient airflow. Check the air filter for dirt. Check for blocked return or supply air grilles. Be sure they are open and unobstructed. If these checks do not reveal the cause, call your servicing dealer.
If your unit is not operating at all, check the following list for easy solutions: ( ) Check to be sure that your thermostat temperature selector is set below the indoor temperature during the cooling season or above the indoor temperature during the heating season. Be sure the SYSTEM switch or MODE control is in the COOL or HEAT and not OFF.
( ) If your unit still fails to operate, call your servicing dealer for troubleshooting and repairs. Specify the model and serial numbers of your unit. (Record them in this manual in  the space provided.) If the dealer knows exactly which unit you have, he may be able to offer suggestions over the phone or save valuable time through knowledgeable preparation for the service call.

In Case of Trouble
If you perform the steps above and unit performance is still unsatisfactory, shut off the unit and call your dealer.

Table 2 – Maintenance Checklist
Monthly maintenance items and outdoor unit rinsing may be performed by the consumer. All other maintenance items and all service work must be performed by a qualified service technician. Read all Warning labels.

Inspect, clean, or replace the air filter if the filter is located indoors in the return air duct.| X|
Clear away debris and vegetation near the unit.| X|
Dealer specific:| |
Inspect cabinet and baseman for damage. Replace panels, gaskets, and other components that are damaged or severely rusted. Make sure precipitation has not entered an indoor section of the unit.| | X
Inspect electrical disconnect for proper function. Repair or replace as necessary.| | X
Inspect electrical wiring and connections. lighten loose connections. Inspect and perform a functional test of equipment as needed to ensure proper function. Repair or replace damaged or overheated components and wiring.| | X
Inspect electric heater, if installed. Check for signs of overheating of elements, controls, and wiring. Make sure heater elements are not broken or electrically shorted.| | X
Check refrigerant system subcooling and/or superheat (system dependent).| | X
Inspect the inside of the unit. Clean if debris is present.| | X
Inspect condenser coil. Clean if dust, dirt, or debris is present. Rinse unit with freshwater (see Note 2).| | X
Inspect condenser motor and fan for damage. Make sure the fan spins freely.| | X
Inspect and clean blower assembly (includes blower housing, wheel, and motor).| | X
Inspect evaporator coil. Clean if dust, dirt, or debris is present (see Note 2).| | X
Clean condensate pan and drain lines (more frequent maintenance may be required in humid climates).| | X
Inspect airflow system (ductwork). Check for leaks and repair as needed.| | X

Notes:

1. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and operating hours. Consult your HVAC dealer about a service
   contract for seasonal inspections.

2. Do not use harsh chemicals or high-pressure water on coils. More frequent rinsing is required for units near the sea coast.

The manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
© 2022 Carrier. All rights reserved.
A Carrier Company
Catalog No: OM-PHJ4-WJH4-01
Replaces: 42702150303
Edition Date: 03/22

Documents / Resources

| Arcoaire PHJ4 14 SEER Single-Packaged Heat Pump System [pdf] Owner's Manual
PHJ4, WJH4, 14 SEER Single-Packaged Heat Pump System
---|---

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>