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
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. 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. Remove the burner and inspect for any carbon or debris. Clean
and reinstall.
5. Blocked condensate drain.
5. Remove blockage in condensate drain.
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.
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.
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.
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