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Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 9
– TROUBLESHOOTING
OMM-0145_A99
• GF-218 • 9/18/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
154
of
157
TABLE 9-1: Boiler Troubleshooting Procedures
Fault
Probable Causes
Corrective Action
3.
Edge [i] Controller
signal type
selection switches not set for
correct signal type (voltage or
current).
3.
Check DIP switch on PMC board to ensure it is
set correctly for the type of signal being sent.
Check control signal type set in the
Remote
Signal
parameter (
Advanced Setup
→
Unit
→
Application Configuration
).
RESIDUAL
FLAME
1.
Defective Flame Detector.
1.
Replace Flame Detector.
2.
SSOV not fully closed.
3.
Wire strand from burner head in
contact with Flame Detector
2.
Check open/close indicator window of Safety
Shut-Off Valve (SSOV) and ensure that the
SSOV is fully closed. If not fully closed, replace
the valve and or actuator.
Close the Gas Shut-Off Valve downstream of
SSOV. Install a manometer or gauge at the leak
detection port between the SSOV and Gas Shut
Off Valve. If a gas pressure reading is observed
replace the SSOV Valve and/or Actuator.
3.
Ensure Flame Detector is in good condition and
is not tilted inward toward burner head.
SSOV
FAULT
DURING
PURGE
See SSOV SWITCH OPEN
SSOV
FAULT
DURING
RUN
SSOV switch closed for 15
seconds during run.
1.
Replace actuator.
SSOV
RELAY
FAILURE
1.
SSOV relay failed on IGST
board.
1.
Press
CLEAR
button and restart unit. If fault
persists, replace Ignition/Stepper (IGST) Board.
2.
Floating Neutral.
2.
The Neutral and Earth Ground are not
connected at the source and therefore there is a
voltage measured between the two. Normally
this measurement should be near zero or no
more than a few millivolts.
3.
Hot and Neutral reversed at
SSOV.
3.
Check SSOV power wiring.
SSOV
SWITCH
OPEN
1.
Actuator not allowing for full
closure of gas valve.
1.
Observe operation of the Safety Shut-Off
Valve (SSOV) through indicator on the Valve
actuator and ensure that the valve is fully and
not partially closing.
2.
SSOV powered when it should
not be
2.
If the SSOV never closes, it may be powered
continuously. Close the gas supply and
remove power from the unit. Refer fault to
qualified service personnel.
3.
Defective switch or Actuator.
3.
Remove the electrical cover from the SSOV
and check switch continuity. If the switch does
not show continuity with the gas valve closed,
either adjust or replace the switch or actuator.