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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22312
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Err 53 on our honeywell thermostat...

Customer Question

err 53 on our honeywell thermostat...
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.

Hello,

this means you have a bad outdoor temp sensor. There are 2 wires that go to a outdoor sensor...this sensor tells the outdoor temp so the thermostat can gage run times. The wire is damaged or the sensor is bad.

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