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Q. No heat (GAS MODELS ONLY)...Hot Surface Ignitor lights but there is no flame at burner...
1. Hot Surface Ignitor out of adjustment ...
a. Reposition ignitor assembly closer to the burner ribbon area. Also check to make sure ribbon is flush all
around the top of the burner tube (ribbon should not stick up at any area).
2. Failed flame-probe assembly or problem with wiring connections to the assembly.
3. NO gas (check shut off valves) or insufficient (low Water Column [W.C.] pressure) gas supply.
4. Failed Hot Surface Ignition (HSI) module.
5. Failed gas valve.
R. No heat...Hot Surface Ignitor lights but burner goes on and off right away...
1. Flame sensor (probe) out of adjustment...reposition closer to the flame area.
2. Failed flame sensor (probe).
3. Sail switch is fluttering ...
a. Lint drawer/screen is dirty or clogged.
b. Restriction in exhaust duct work.
4. Insufficient make-up air.
5. Failed Hot Surface Ignition (HSI) module.
S. Dryer operates, but is taking too long to dry...
1. Exhaust duct work run is too long or is undersized...back pressure cannot exceed 0.3 inches Water Column
(W.C.).
2. Low and/or inconsistent gas pressure.
3. Insufficient make-up air.
4. Poor air/gas mixture at burner...yellow or poor flame pattern. Adjust gas burner air adjustment shutters.
5. Lint drawer/screen not being cleaned out on a regular basis or often enough.
6. Extractors (washers) not performing properly.
7. Sail switch is fluttering...restriction in exhaust.
8. Failed microprocessor controller (computer) temperature sensor...temperature calibration is inaccurate.