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 99 of 170
TABLE 7-1. WATER HEATER TROUBLESHOOTING
AIRFLOW FAULT
DURING IGNITION
1. Blower stopped running due to thermal
or current overload.
1. Check combustion blower for signs of excessive heat or high
current drain that may trip thermal or current overload devices.
2. Blocked Blower Inlet or inlet
ductwork.
2. Inspect the inlet to the combustion blower including any
ductwork leading up to the combustion blower for signs of
blockage.
3. Blocked Blower Proof switch.
3. Remove the Blower Proof switch and inspect for signs of
blockage, clean or replace as necessary.
4. Blocked Blocked-Air Inlet switch.
4. Remove the Blocked-Air Inlet switch and inspect for signs of
blockage, clean or replace as necessary.
5. Defective Blower Proof switch.
5. Measure the Blower Proof switch for continuity with the
combustion blower running. If there is an erratic resistance
reading or the resistance reading is greater than zero ohms,
replace the switch.
6. Defective Blocked-Air Inlet switch.
6. Measure the Blocked-Air Inlet switch for continuity with the
combustion blower running. If there is an erratic resistance
reading or the resistance reading is greater than zero ohms,
replace the switch.
7. Loose temperature to AUX connection
in I/O Box.
7. Check the actual inlet air temperature and measure voltage at
AUX input in the I/O Box. Verify that the voltage conforms to the
values shown in the tabular listing provided in Appendix C.
8. Defective temperature sensor.
8. Refer to item 7, above, and verify that the voltage conforms to
the values shown in Appendix C.
9. Loose wire connection between the 0-
10V signal from I/O box to the Blower
Motor input.
9. Check wire connection from I/O Box 0-10V signal to the Blower
Motor.
10. Measure voltage at the I/O box 0-10V output. A voltage of 8.2V
equates to a 100% open valve position.
11. Wrong 0-10V output selection on the
Edge
Controller.
11. Check that the blower Analog Out terminal on the I/O board has
a corresponding signal for the A/F valve.
12. Defective Air-Fuel Valve
potentiometer.
12. Check Air/Fuel Valve position at 0%, 50% and 100% open
positions. The positions on the VALVE POSITION bargraph
should match the dial readings on the Air/Fuel Valve dial.
To Next Page
Loading...
