YCH - Ignition Control Faults

Article ID: 447

Last updated: 5 Dec, 2017

Trane Package Unit: YCH

Re: Ignition Lockout Codes

Trane YCH package units are multi-stage gas/electric units.

These units have a separate ignition control board which controls all heating functions except the indoor blower.
The ICB has a diagnostic light to indicate heat status.

Light Status	Description
OFF	No Power/Internal Failure
ON	Normal/No Call for Heat
Pulse	Normal/Call for Heat
1	Communication Loss
2	Lockout - No Flame Sensed (3 tries)
4	High Limit (TCO) Open
5	Flame Sensed with Gas Valve Off

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Article ID: 447

Last updated: 5 Dec, 2017

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