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.

IO-354B specifications

The Goodman Mfg IO-354B is a high-efficiency, residential air conditioning unit known for its robust performance and reliability. As a part of Goodman’s commitment to providing affordable and efficient HVAC solutions, the IO-354B stands out with its advanced features, durable construction, and user-friendly technologies.

One of the primary highlights of the IO-354B is its impressive cooling capacity, making it a perfect choice for medium to large-sized homes. With a cooling capacity of 3.5 tons, this unit efficiently maintains comfortable indoor temperatures even during the hottest summer days. It operates quietly, ensuring that homeowners can enjoy a peaceful environment without the disruption of loud mechanical noises.

The IO-354B incorporates advanced multi-speed fan technology, which not only enhances air circulation but also promotes energy efficiency. This feature allows the system to adjust its speed based on current cooling needs, reducing energy consumption while ensuring optimal comfort. This makes the unit not only cost-effective but also environmentally friendly, as it helps to lower the carbon footprint of the household.

Efficiency is a hallmark of the IO-354B, boasting a high SEER rating. A higher Seasonal Energy Efficiency Ratio (SEER) translates to better energy savings; thus, reducing overall utility bills. This efficiency is further enhanced by the unit’s use of eco-friendly refrigerants, contributing to a greener solution for air conditioning needs.

Durability is another critical characteristic of the Goodman IO-354B. Constructed with a heavy-duty, galvanized steel cabinet, it is built to withstand even the toughest weather conditions. Additionally, the unit features a high-performance scroll compressor, known for its longevity and fewer moving parts, which results in a more reliable operation over time.

Goodman also places a strong emphasis on ease of maintenance with the IO-354B. Its user-friendly design includes removable panels that facilitate access for routine service and maintenance, ensuring that homeowners can keep their systems in optimal condition without hassle.

In summary, the Goodman Mfg IO-354B combines high efficiency, durability, and innovative technology to deliver comfort and affordability. Whether seeking to cool down a new home or replace an aging unit, the IO-354B is an excellent choice for those prioritizing performance and energy savings in their HVAC system. With a rich history in the industry, Goodman continues to be a trusted name in heating and air conditioning, and the IO-354B exemplifies this commitment to quality and innovation.