m Unit is blowing 40amp fuses between breaker sub-panel (40amp for Blower, 40amp for Heater) and indoor unit. Fed by 10g wire.
Heat pump surges when it activates.
Progression- Temperatures drop in the 30's (Dec), noticed air not warm, Tech found: heating elements disconnected at Thermostat (by Tech for previous owners to save energy), re-connected, in 5 days no power to thermostat agian, Tech found: fuse blown, claimed fuse needs to be a 50amp fuse fed by 8g wire. Installer claimed bad fuse. Unit work until today Mar 3rd. WHAT IS GOING ON? I hope the unit doesn't start a house fire and spread to a Wildland fire. Unit installed 6/05.
I need your ideas before installer claims not his issue. Please can you give me any ideas why the unit is doing this. Why do two different Techs given different idea, is this common in the Industry.
Air Handler: TWE049E13FB BTU-42K Strip Heat 7.5kw
Heat Pump: 2TWX4042 Tons 3.5 HSPF 9.9 Seer 14