Solution to Last Month’s Problem: A Heat Pump That’s Not Blowing Cool Air
by Jim Johnson
The next step to take in this situation is to manually re-set the High-Pressure Control. When we do, we’ll be able to observe what could be the cause of it being open. There are three reasonable possibilities to consider:
1. A failed outdoor fan motor
2. A dirty outdoor coil, or
3. A refrigerant overcharge that could have caused the excessive high side pressure that resulted in the protective control opening and breaking the circuit to the contactor coil.
This month’s winner of Jim’s video “Understanding Compressor Motor Windings” and also an EDHL1 Electronic Handle and ACH Current Clamp Head courtesy of Fieldpiece Instruments:
Joseph Balano
Intel Corporation
Santa, Clara, CA
Note to monthly and quarterly winners: To expedite your prizes and to ensure proper shipping address, please contact Jim Johnson by: phone (520) 625-6847; fax (520) 648-3334; or by mail at Technical Training Associates, HC 70 Box 3172, Sahuarita, AZ 85629.
All others who submitted the correct answer by the cutoff date are:
Hank Rouzaud
Las Vegas, NV
Thinh Do
Ted Dumont HVAC
Boise, ID
Ruben Gamez
Air-Tro Heating and A/C
Monrovia, CA
Pat Cassidy
Vandenberg AFB
Lompoc, CA
Ron Glassi
Air Express
La Mesa, CA
Javier Valencia
Javi-Air Corporation
Palmdale, CA
Dan Lavarda
ARS
Bourbonnais, IL
Miguel Garcia
CBRE/Hertz
Phoenix, AZ
Roger DesRosiers
RJD Associates
Redondo Beach, CA
Steve Weber
Boulden’s One Hour Heating & Air
Neward, DE