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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 100 of 170
TABLE 7-1. WATER HEATER TROUBLESHOOTING
FAULT INDICATION
PROBABLE CAUSES
CORRECTIVE ACTION
AIRFLOW FAULT
DURING PURGE
1.
Blower not running or running too
slow.
1.
Start the unit. If the blower does not run check the blower solid
state relay for input and output voltage. If the relay is okay,
check the blower.
2.
Defective
Air Flow
switch.
2.
Start the unit. If the blower runs, check the airflow switch for
continuity. Replace the switch if there is no continuity.
3.
Blocked
Air Flow
switch.
3.
Remove the air flow switch and inspect for signs of blockage,
clean or replace as necessary.
4.
Blocked blower inlet or inlet ductwork.
4.
Inspect the inlet to the combustion blower including any
ductwork leading up to the combustion blower for signs of
blockage.
5.
No voltage to switch from
Edge
Controller.
5.
Measure for 24 VAC during start sequence from each side of the
switch to ground. If 24 VAC is not present refer to qualified
service personnel.
6.
PROBABLE CAUSES from AIRFLOW
FAULT DURING IGNITION above,
items 3 to 12, applies to this fault.
6.
See CORRECTIVE ACTIONS from AIRFLOW FAULT DURING
IGNITION above, items 3 to 12.
AIRFLOW FAULT
DURING RUN
1.
Blower stopped running due to thermal
or current overload.
1.
Check combustion blower for signs of excessive heat or high
current draw 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 airflow switch.
3.
Remove the airflow switch and inspect for signs of blockage,
clean or replace as necessary.
4.
Defective airflow switch.
4.
Measure the airflow 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.
5.
Combustion oscillations.
5.
Run unit to full fire. If the unit rumbles or runs rough, perform
combustion calibration.
6.
PROBABLE CAUSES from AIRFLOW
FAULT DURING IGNITION above,
items 3 to 12, applies to this fault.
6.
See CORRECTIVE ACTIONS from AIRFLOW FAULT DURING
IGNITION above, items 3 to 12.