I just had a 2nd compressor motor go on a Geothermal unit in less than 3 months, thought first was a fluke, but now I am not sure.
The facts:
The house has a long run (530ft) of underground service wire (350mcm) between pole and panel. Service is 200 amp.
The pole tranformer was 25kva, power co just switched it out for a 50kva in case that was an issue.
The unit is a HRV048A1C01ART from comfort aire (heat controller) the LRA is 102 Amps, RLA 18.3 208/230 v (was set to 230) 1ph 197 min V
We did a voltage read at startup on the second unit, and it dipped from 246 to 218 for a sec during startup. Did put a hard start boost capacitor on the 2nd unit, but the compressor still failed shortly after install.
The house does have normal appliances, the 1.5 hp well pump usually kicks in right after the geothermal unit. The lights do of course dim when the unit kicks in.
Questions:
1. Would marginly sized wire cause 2 compressors to go?
2. Someone suggested a thermal trip between the breaker and the unit if voltage drops, suggestions?
Ideas?
thanks,
The facts:
The house has a long run (530ft) of underground service wire (350mcm) between pole and panel. Service is 200 amp.
The pole tranformer was 25kva, power co just switched it out for a 50kva in case that was an issue.
The unit is a HRV048A1C01ART from comfort aire (heat controller) the LRA is 102 Amps, RLA 18.3 208/230 v (was set to 230) 1ph 197 min V
We did a voltage read at startup on the second unit, and it dipped from 246 to 218 for a sec during startup. Did put a hard start boost capacitor on the 2nd unit, but the compressor still failed shortly after install.
The house does have normal appliances, the 1.5 hp well pump usually kicks in right after the geothermal unit. The lights do of course dim when the unit kicks in.
Questions:
1. Would marginly sized wire cause 2 compressors to go?
2. Someone suggested a thermal trip between the breaker and the unit if voltage drops, suggestions?
Ideas?
thanks,