Welcome To The ACHR News Troubleshooting Page
On this exclusive Air Conditioning Heating Refrigeration News page on our site, you’ll find the solutions to the troubleshooting problems published in ACHR News Extra Edition.
Once you’ve reviewed the problem in Extra Edition and checked the answer we present here, feel free to use the submission form below to send us comments or suggestions. We update this page regularly, and we can add your comments to the archived problem answers if you give us permission to do so.
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May 8, 2017 Issue Answer:
Our test procedures at the indoor coil showed both a higher-than-normal static pressure differential and temperature drop, proving that the coil needs to be cleaned.
June 5, 2017 Issue Answer:
The initial diagnosis is incorrect. The source of the problem is the check valve that is leaking into the indoor coil.
July 10, 2017 Issue Answer:
Two possibilities in this case are a failed thermostat or a problem with the thermostat wiring that is preventing a circuit to the ‘O’ connection on the control voltage terminal board. Without 24-volts applied to this terminal, the reversing valve solenoid isn’t energized, preventing the system from shifting to the cooling mode.
August 7, 2017 Answer:
The component that is suspect is the condenser fan motor. The proper current draw for this motor (part # 621911) is 1.4 Amps. The lower-than-normal current draw indicates that the motor is failing. Intermittently, the motor overheats and stops, the compressor kicks off on overload and attempts a short cycle re-start, which results in a blown fuse.
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