On 5/23 I started a thread with the subject "Heat Pump Performance Questions". There were several helpful responses, but now I have a few new questions. For several days our 6 year old Carrier HP system seemed to be somewhat unpredictable and out of control. Many times the air handler would start without the compressor running. Sometimes the compressor would start 5 or 10 minutes later. At other times both would start together, but after 5 or 10 minutes the compressor would shut down while the air handler continued to run. On one occasion I was working in the yard near the compressor and heard it start up. I walked over to it and felt the exhaust air to see if it was warm -- and it was. Then after 5 or 10 minutes of running, the compressor FAN stopped, while the compressor itself kept running for another minute or two before stopping. (Is this a big clue? -- should the compressor fan EVER stop while the compressor continues to run?) During these times the indoor temperature sometimes rose to 2 or 3 degrees above the set point. And now, as if to add to the mystery -- the system suddenly began to act completely normal 3 days ago and through today, with none of the strange behavior listed above. At a routine service call one month ago (and before some of the above symptoms appeared) the dealer's serviceman reported the system to be in good shape and performing normally. Can anyone please offer some explanations or comments? Thanks. Art Replace deadspam with yahoo to reply.
- posted
19 years ago