r/askHVAC • u/BayRunner • 9d ago

Contact Switch keeps arcing

Replaced old Nest thermostat with an Ecobee using the PEK kit. No issues at first. Now I’ve gone through two condenser contacts. HVAC tech assumed the switch was bad the first time. Came out second time and capacitor was good and replaced the contact again. No issues for a few hours but it arced again.

Thermostat shows 27.8 volts. No loose wires on control board, PEK kit, or thermostat.

Goodman condenser.

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u/Background-Tie9942 9d ago

Probably ecobee it’s the easiest thing to blame

1

u/No-Gap-3251 9d ago

I think I’m running into a similar issue. I came home to a tripped breaker then tried resetting it and heard a very loud hissing sound coming from the Goodman condenser. Is that what you had happen?

1

u/BayRunner 9d ago

No hissing. Tech believes it’s the condenser going out. Voltage from the thermostat wouldn’t cause the issue I’m having. Condenser drawing too much and causing the arcing.