Vulcan-Hart 136647, Руководство по обслуживанию

Страница: 33 / 36

GRA SERIES GAS FRYERS - TROUBLESHOOTING
IGNITION SYSTEM STATUS LED CODES (GREEN) - PART NO. 857207-1
SINGLE TRY LOCKOUT IGNITION MODULE
LED Flash
Code
Indicates System Action Possible Causes
OFF No Call for Heat None None
Fast Flash Startup
- Pilot flame sense
calibration
Flame sense calibration
automatically occurs immediately
after pilot lights. None
Heartbeat Normal operation None None
3 Restart ignition trial
- Pilot flame failed
while main burner
on
Trial for ignition auto re-starts. Flash
code will remain through the ignition
trial until pilot flame is proved. If pilot burner fails to light on
next trial for ignition - check:
1. Gas supply.
2. Pilot burner.
3. Spark/flame sense wiring.
4. Flame sense electrode
contaminated or out of
position.
5. Pilot burner ground.
4 Pilot flame sensed out
of sequence If ignition system self corrects within
10 seconds, ignition module returns
to normal operation. If flame sense
out of sequence continues, module
changes to Flash Code 6+4. 1. Check pilot burner.
A. If pilot flame present,
replace gas valve. If
no pilot flame, cycle
Call for Heat, or
power.
B. If error repeats
(continual or
intermittent), replace
ignition module.
7 Pilot flame sense
leakage to ground Module will not proceed to trial for
ignition. When fault is corrected,
module resumes trial for ignition,
after a one minute delay. 1. Check spark/flame sense
wiring.
2. Check flame sense
electrode position.
3. Check flame sense
electrode ceramic for
cracks.
F25377 (March 2010) Page 33 of 36