ADC AD-78 User Manual
Page 67
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3) Sail switch is fluttering ...
a) Lint screen is dirty or is not being cleaned often enough.
b) Restriction in the exhaust.
4) Failed burner hi-lim it...opens at incorrect tem perature.
5)
G as supply m ay have too low a heating value.
ELECTRIC MODELS...
1) No enough m ake-up air.
2) Restriction in the exhaust...
3) Lint screen is dirty or is not being cleaned often enough.
4) Im pellor (fan/blower) is rotating in the wrong direction only
(for 30 Models ONLY).
5)
Failed electric elem ent(s).
6) Sail switch is fluttering ...
a) Restriction in the exhaust.
b) Sail switch is not adjusted properly.
STEAM MODELS...
1) Low steam pressure.
2) Insufficient m ake-up air.
3) Lint screen is dirty or is not being cleaned often enough.
4) Restriction in the exhaust.
5)
Dirty steam coil...
a) Fins are clogged with lint.
6) Steam dam per system is not functioning properly.
a) Steam dam per is sticking closed.
b) Leak in the pneumatic (air) system.
7. Extractors (water) are not functioning properly.
8. Failed lint cham ber hi-heat switch (therm ostat)...opens at incorrect tem perature.
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