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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Carrier 50JZ024 heat pump, suplimental heat not working

Customer Question

Carrier 50JZ024 heat pump, suplimental heat not working
Submitted: 6 months ago.
Category: HVAC
Expert:  airheatman replied 6 months ago.

Will it come on if you turn thermostat to EMER heat?

Customer: replied 6 months ago.
System was in auto, display shower "EHEAT", no heat. Stepping from auto to "EHEAT", still no heat, also don't notice the slight smell we sometimes get with EHEAT, especially early in the season.
Customer: replied 6 months ago.
Opened the unit, heat system appears to consist of two heating circuits, feeding off a pair of fuses. Each fuse goes through a relay, a limit switch then there is a heating element. One of the limit switches checked open circuit, I shook it, got continuity, but it's intermittent. Also checked continuity on the heating elements, got 11-Ohms. So I bypassed it, applied power, get 240V across each heating element, but still no heat, just blows cold air.
Expert:  airheatman replied 6 months ago.

>Disconnect element and check continuity.If elements is good and you have 240 v element should heat up.

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