Fault Code Lookup

HVAC Sales Master

8

Weak Flame

This code typically points to

Weak flame-sense signal

Next checks to confirm

Clean flame sensor
Measure flame current

Escalation

Can produce recycles/lockout

Reset behavior

Clears when flame-sense issue corrected.

Urgent

Fix now

Source

Trane 18-CD26D1-13 Installer's Guide, p.43

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