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Innovation - Edge [i] Installation, Operation, Maintenance Manual
CHAPTER 7
– TROUBLESHOOTING GUIDE
OMM-0143_A
• GF
-216
•
9/6/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 102 of 170
TABLE 7-1. WATER HEATER TROUBLESHOOTING
FAULT INDICATION
PROBABLE CAUSES
CORRECTIVE ACTION
FLAME LOSS
DURING RUN
1.
Worn Flame Detector or cracked
ceramic.
1.
Remove and inspect the Flame Detector for signs of wear or
cracked ceramic. Replace if necessary.
2.
Defective Regulator.
2.
Check gas pressure readings using a gauge or manometer into
and out of the Air/Fuel Valve to ensure that the gas pressure into
and out of the valve is correct.
3.
Poor combustion calibration.
3.
Check combustion calibration. Adjust as necessary.
4.
Debris on burner.
4.
Remove the burner and inspect for any carbon or debris. Clean
and reinstall.
5.
Blocked condensate drain.
5.
Remove blockage in condensate drain.
HEAT DEMAND
FAILURE
1.
The Heat Demand Relays on the
Ignition/Stepper board failed to
activate when commanded.
1.
Press
CLEAR
button and restart the unit. If the fault persists,
replace Ignition/Stepper (IGST) Board.
2.
Relay is activated when not in
Demand.
2.
Defective relay. Replace IGST Board.
HIGH EXHAUST
TEMPERATURE
1.
Poor combustion calibration.
1.
Check combustion calibration using procedures in Chapter 4.
2.
Heat exchanger has scale.
2.
Clean heat exchanger using procedures in Chapter 6.
HIGH GAS
PRESSURE
1.
Incorrect supply gas pressure.
1.
Check to ensure that gas pressure at inlet of SSOV is
not above
14” W.C. (3.49 kPa).
2.
Defective SSOV Actuator.
2.
If gas supply pressure downstream of SSOV Actuator cannot be
lowered
to below 3.0” W.C. (747 Pa) using the gas pressure
adjustment screw, see Section 4.3, Step 14, the SSOV Actuator
may be defective.
3.
Defective
High Gas Pressure
switch.
3.
Remove the leads from the
High Gas Pressure
switch and
measure continuity across the common and normally closed
terminals with the unit not firing. Replace the switch if it does not
show continuity.