I.C.E. GIDM-325 User Manual
The equipment has been electrically and fire tested prior to shipment. However, during transit, misadjustment of
controls and loose wires could develop. Do not assume a control is defective until it and its associated wiring is
This equipment has may items supplied to us by outside vendors. This manual is accompanied by information sheets
on most of these items which should be referred to for detailed service information.
The following is an obvious list of items that could cause field problems; however, it does not cover all problems
encountered and is meant to be used as a guide only.
1. EXHAUSTER* AND/OR BURNER MOTORS FAIL TO RUN. CONTROL RELAY DOES NOT
A) Blown fuses. Main disconnect open.
B) Control relay off on flame failure. Push reset button on control.
C) Thermostat or duct stat not calling for start-up. Defective control.
D) Loose wire or low voltage.
E) Motor overcurrent protector tripped in open position or defective.
F) Controls in limit circuit defective or tripped in open position.
G) Control transformer defective.
2. EXHAUSTER* AND/OR BURNER MOTORS RUN, NO IGNITION OR MAIN FLAME. PRIMARY RELAY
WILL NOT INDICATE FLAME FAILURE.
A) Exhauster* and/or burner motors running backwards.
B) Misadjusted draft.
C) Misadjusted or defective exhauster draft switch*.
D) Main safety gas valve proof of closure switch and/or low fire proving switch (on modulating burners only)
E) High or low gas pressure switch tripped.
3. EXHAUSTER* AND/OR BURNER MOTORS RUN, NO IGNITION OR MAIN FLAME. PRIMARY
RELAY LOCKS OUT ON FLAME FAILURE.
A) Fuel valve manually closed.
B) Ignition transformer or pilot defective. Defective or improperly gapped ignition electrodes. Cracked
C) Broken or loose wire in fuel circuit.
D) Gas nozzles obstructed or plugged.
E) Gas pilot valve defective. Main fuel valve defective.
F) Insufficient fuel at supply. Air in system.
4. BURNER SHORT CYCLES.
A) High limit switch misadjusted or defective.
B) Draft switch* misadjusted or defective.
C) Various ductstats defective or settings improper.
5. EXHAUSTER* AND/OR BURNER MOTORS RUN, IGNITION AND MAIN FLAME. MAIN FAN MOTOR
FAILS TO OPERATE.
A) Automatic fan switch not set properly or defective.
B) Blown fan fuses.
C) Motor overcurrent protector tripped open or defective.