Article ID: 209
Last updated: 6 Feb, 2017
Trane Reliatel Rooftop Units Re: Heat Fault Code 3 Reliatel gas/electric rooftop units have a Heat Control Board as well as the Reliatel Control Board. There are several version of the Heat Control Board, but two main varieties: 1) Spark ignition and 2) Hot Surface ignition. The Heat Control Board has an LED for displaying status & fault information. It is very common for the heat faults to not be shown anywhere on the Trane diagrams. Code 3 = Pressure Switch Fault The pressure switch should close when the inducer motor starts for a call for heat. A code 3 is generated when the switch fails to close.
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Article ID: 209
Last updated: 6 Feb, 2017
Revision: 1
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