I. № heat)...no voltage at heating unit (i.e, Hot surface ignition [hsi] module, Electric oven contactor, or – ADC AD-78 User Manual
Page 65: Steam damper system pneumatic solenoid)
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
I.
№ heat)...no voltage at heating unit (i.e.,
Gas M odel -
Hot Surface Ignition [HSI] module,
Electric Model
- electric oven contactor, or
Steam M odel -
steam damper system pneumatic
solenoid) •••
GAS MODELS...
1. Fault in hot surface ignition system ...
a. H ot surface ignitor glows but no ignition and H SI m odule "LOC KS-O UT" ("red" L.E.D. [light
em itting diode] indicator flashes)...
1) Flam e probe assem bly is out of adjustm ent or has failed.
2) Severe air turbulence.
3) Failed H SI m odule.
4) Failed gas valve.
b. H ot surface ignitor glows, but burner goes off right away ...
1) Flam e probe assem bly is out of adjustm ent or has failed.
2) Sail switch is fluttering ...
a) Lint screen is dirty.
b) Restriction in exhaust duct work.
c. H ot surface ignitor does not glow and H SI m odule "LO CK S-O UT" ("red" L.E.D. indicator flashes) ...
1) Fault in hot surface ignitor wiring...break or loose connection.
2) Failed hot surface ignitor.
3) Failed H SI m odule.
ELECTRIC MODELS...
1. Fm led oven contactor/coil.
2. Failed electric heating elem ent(s).
STEAM MODELS...
1. Air O perated System ...
a. No (external) com pressed air f80
PSl required)
to steam dam per solenoid.
b. Failed steam dam per pneum atic solenoid.
60