Weather-Rite XT112 Installation, Operation & Service Manual - page 87
SECTION 23: T
ROUBLESHOOTING
81
23.3 Burner
PROBLEM
POSSIBLE CAUSE
SOLUTION
Flame control
does not try for
ignition
Auxiliary contact not closed.
Properly mount contact or replace
Burner/winter switch closed?
Replace switch
High temp limit switch tripped?
Manually reset or replace
Low airflow pressure switch contacts not made.
Check blower operation
Reconnect tubes to pressure switch
Clean pressure test tubes
Check filters/duct work for restrictions
High airflow pressure switch contacts not made.
Check blower FLA and compare to data plate.
Cabinet pressure too high check system setup
and for restrictions down stream of blower.
Optional: Mild weather stat, dial set to low
Set dial higher
Replace stat
Optional: High gas pressure switch
Manual reset
Verify gas pressure
Optional: Low gas pressure switch
Manual reset
Verify gas pressure
Flame control defect
Replace
Burner Lockout
Failure to ignite pilot or main flame
Flame control failure
Reset the flame control module at the unit and
proceed to the next step, observing the unit to
indicate at which step lockout condition occurs.
No PILOT flame
No spark
Check wiring from burner control to ignition
transformer.
Check high tension wire to spark plug.
Replace ignition transformer.
No gas
Open manual gas shut off valves.
Check wiring from burner control to pilot gas
valve.
Verify inlet gas pressure.
Adjust pilot gas pressure.
Replace pilot gas valve.
Check burner pilot opening for obstruction.
Pilot flame does
not stay lit
Improper pilot gas pressure
Adjust pilot gas pressure.
Flame rod does not detect flame, Is there 5VDC
on Flame signal at flame safeguard?
Replace flame rod
Replace flame rod
Flame rod dirty
Clean flame rod