Troubleshooting Chart — Heating

REFRIGERANT SYSTEM

DIAGNOSIS – HEATING

Low Suction Pressure

 

High Suction Pressure

 

Low Head Pressure

 

High Head Pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low Airflow

 

Outdoor Ambient Too High

 

Refrigerant System

 

Outdoor Ambient Too High

 

for Operation in Heating

 

 

For Operation In Heating

Across Outdoor Coil

 

 

Restriction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerant System

 

Reversing Valve not

 

Reversing Valve not

 

Low Airflow Across

Restriction

 

Fully Seated

 

Fully Seated

 

Indoor Coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Undercharged

 

Overcharged

 

Undercharged

 

Overcharged

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Moisture in System

 

Defective Compressor

 

Defective Compressor

 

Noncondensables (air) in

 

 

 

System

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Troubleshooting Chart

(Heat Pump)

HEAT PUMP

SYSTEM COOLS WHEN

HEATING IS DESIRED.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is Line Voltage

 

 

 

Is the Selector Switch

Present at the Solenoid

NO

 

Set for Heat?

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the Solenoid Coil Good?

 

 

 

Replace the Solenoid Coil

NO

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reversing Valve Stuck

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace the Reversing Valve

 

 

 

 

 

 

 

 

 

 

 

 

 

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Friedrich racservmn service manual System Cools When Heating is Desired, Yes

racservmn specifications

Friedrich Racervmn is an innovative name in the realm of precision engineering, making significant strides in the development of advanced technologies for various industries. This company stands out due to its commitment to creating high-quality, reliable, and efficient products that cater to the diverse needs of its clientele.

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