Service, Valve Body Damaged Replace valve

LUBRICATION

The fan shaft bearings, the 1 to 2 HP supply fan motors the condenser fan motors and compressors are permanently lu- bricated.

UNDERCHARGE

An undercharged heat pump on the heating cycle will cause low discharge pressure resulting in low suction pressure and frost accumulation on the outdoor coil.

FUNCTIONAL PARTS

Refer to the unit Parts Catalog for a list of functional parts. Parts are available from your distributor.

SERVICE

THE FOLLOWING INFORMATION IS FOR USE BY QUALI- FIED SERVICE AGENCY ONLY: OTHERS SHOULD NOT ATTEMPT TO SERVICE THIS EQUIPMENT.

Common Causes of Unsatisfactory Operation of Heat Pump on the Heating Cycle.

INADEQUATE AIR VOLUME THROUGH INDOOR COIL

When a heat pump is in the heating cycle, the indoor coil is functioning as a condenser. The return air filter must always be clean, and sufficient air volume must pass through the indoor coil to prevent excessive discharge pressure, and high pressure cut out.

OUTSIDE AIR INTO RETURN DUCT

Do not introduce cold outside air into the return duct of a heat pump installation. Do not allow air entering the indoor coil to drop below 65° F. Air below this temperature will cause low discharge pressure, thus low suction pressure, and exces- sive defrost cycling resulting in low heating output. It may also cause false defrosting.

POOR “TERMINATING” SENSOR CONTACT

The unit’s defrost terminating sensor must make good ther- mal contact with the outdoor coil tubing. Poor contact may not terminate the unit’s defrost cycle quickly enough to pre- vent the unit from cutting out on high discharge pressure.

MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO:

1.Solenoid not energized - In order to determine if the solenoid is energized, touch the nut that holds the solenoid cover in place with a screwdriver. If the nut magnetically holds the screwdriver, the solenoid is energized and the unit is in the cooling cycle.

2.No voltage at unit’s solenoid - Check unit voltage. If no voltage, check wiring circuit.

3.Valve will not shift:

a.Undercharged - check for leaks;

b.Valve Body Damaged - Replace valve;

c.Unit Properly Charged - If it is on the heating cycle, raise the discharge pressure by restricting airflow through the indoor coil. If the valve does not shift, tap it lightly on both ends with a screwdriver handle. DO NOT TAP THE VALVE BODY. If the unit is on the cooling cycle, raise the discharge pressure by restricting airflow through the outdoor coil. If the valve does not shift after the above attempts, cut the unit off and wait until the discharge and suction pressure equalize, and repeat above steps. If the valve does not shift, replace it.

CPC/CPH specifications

Goodman Manufacturing, a prominent name in the HVAC industry, offers a range of products designed for efficiency, reliability, and affordability. Among their various offerings, the Goodman CPC (Commercial Packaged Condensing) and CPH (Commercial Packaged Heat Pump) systems stand out due to their advanced features and innovative technologies.

The Goodman CPC and CPH units are designed for commercial applications, providing effective heating and cooling solutions for diverse settings such as restaurants, warehouses, and retail spaces. One of the main features of these systems is their high energy efficiency, which allows businesses to save on energy costs while reducing their carbon footprint. These units typically feature SEER (Seasonal Energy Efficiency Ratio) ratings that comply with or exceed industry standards, ensuring optimal performance throughout the year.

Equipped with high-performing scroll compressors, Goodman’s CPC and CPH systems deliver consistent cooling and heating performance, enhancing overall system reliability. The scroll compressor technology is known for its durability and quieter operation, making it an excellent choice for environments where noise reduction is crucial.

Another significant characteristic of Goodman’s systems is their robust construction. Built with commercial-grade materials, the CPC and CPH units are designed for long-term performance, capable of withstanding harsh weather conditions and heavy usage. The all-aluminum microchannel coils used in these units provide excellent heat exchange efficiency and resist corrosion, ensuring a longer lifespan.

Smart technology integration is another highlight of Goodman’s offerings. The CPC and CPH systems can be equipped with advanced controls, including smart thermostats and remote monitoring capabilities, allowing businesses to optimize their HVAC performance. These technologies enable precise temperature control and energy management, leading to increased comfort and cost savings.

Furthermore, Goodman emphasizes ease of installation and maintenance in the design of their CPC/CPH systems. The compact design and simplified access to key components ensure that service technicians can perform maintenance promptly, minimizing downtime in commercial settings.

Ultimately, Goodman Manufacturing’s CPC and CPH systems represent a blend of energy efficiency, advanced technology, and durability, making them an excellent choice for businesses seeking reliable HVAC solutions. With a commitment to quality and customer satisfaction, Goodman continues to be a leader in the HVAC industry, providing products that meet the needs of today’s diverse commercial environments.