User Guide

TROUBLESHOOTING
Symptom Remedy
Flame not
established
Check gas supply, pilot burner, spark and ame sense wiring, ame rod contaminated or not enveloped
with ame, burner ground connection.
Flame out If system fails to light on next trial for ignition, check gas supply, pilot burner, ame sense wiring,
contamination of ame rod, burner ground connection.
Flame out of
sequence
Check for pilot ame. Replace gas valve if pilot ame present. If no pilot ame, cycle “Call for Heat”. If
error repeats, replace control.
LED FAULT CODES
# of Flashes Represent
Constant ON Normal operation
1 second on/5 seconds off In retry period
Off No power or detected fault
WIRING DIAGRAMS
ONE-YEAR LIMITED WARRANTY
The Seller warrants its products against defects in material or workmanship for a period of one (1) year from the date of manufacture. The liability
of the Seller is limited, at its option, to repair, replace or issue a non-case credit for the purchase prices of the goods which are provided to be
defective. The warranty and remedies set forth herein do not apply to any goods or parts thereof which have been subjected to misuse including
any use or application in violation of the Seller’s instructions, neglect, tampering, improper storage, incorrect installation or servicing not performed
by the Seller. In order to permit the Seller to properly administer the warranty, the Buyer shall: 1) Notify the Seller promptly of any claim, submitting
date code information or any other pertinent data as requested by the Seller. 2) Permit the Seller to inspect and test the product claimed to be
defective. Items claimed to be defective and are determined by Seller to be non-defective are subject to a $30.00 per hour inspection fee. This
warranty constitutes the Seller’s sole liability hereunder and is in lieu of any other warranty expressed, implied or statutory. Unless otherwise
stated in writing, Seller makes no warranty that the goods depicted or described herein are t for any particular purpose.
ICM2902 TYPICAL WIRING DIAGRAMS
SENSE
M.V.
P.V.
GROUND
GROUND
GROUND
GROUND
1
3
4
SPARK
Combination
Gas Valve
Burner Ground
Flame Sensor
Spark Electrode
Terminal numbers shown
on control label
1
JP20 not used on G20R
units
2
1
M
M/P
P
LED
2
THS
24 VAC Common
7
J20 P20
4
J20 P20
Wiring for
G23 or G26
Only
Wiring for
G20 or G20R
2
LIAF153-1
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com
Patented:
Energy Preservation & Transfer Mechanism (#5,889,645)
Fail Safe Relay Driver (#5,917,691)
Ignition Boost (#6,222,719)
PWM relay actuator circuit (#5,930,104)