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Category: HVAC
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Experience:  15yrs in the HVAC industry with certificates and degrees.
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I get a system malfunction 138 on a carrier infinity system,

Customer Question

I get a system malfunction 138 on a carrier infinity system, Thermal Lockout in High Stage. This happened the other day as well and a few weeks before I got a freeze up of the coils which I had to let thaw. Today I shut it down and turnd off the fuse. Once back on, it started up about 15 minutes later with cool air.
Submitted: 1 year ago.
Category: HVAC
Expert:  HVAC Guru replied 1 year ago.

Hello, the unit may be low on freon have you checked the pressures on the unit?

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