Owner manual

14
FLAME
MV STATUS
If the red Status LED and green MV LED are on continuously
▪ Call for heat is active.
▪ Control is powered.
▪ Igniter should be energized and sparking at the burner head, gas
valve should be open, motor should be running.
▪ If no sparking at the burner, follow the troubleshooting sequence.
FLAME
MV STATUS
If the Status and MV LEDs are on continuously and the Flame LED is
ashing
▪ The ame signal is weak
▪ Try to improve ame signal strength by following steps in the Trouble-
shooting Sequence under “Is the yellow Flame LED on?”
FLAME
MV STATUS
If the red Status and yellow Flame LEDs are both ashing
▪ The control is sensing ame when no ame should be present.
▪ The control enters a hold state, this is not a lockout.
▪ Control will remain in hold state until ame is no longer present.
▪ Check for ame in the burner.
▪ Check gas valve for leakage through the valve, replace valve if leak-
ing.
▪ Measure gas pressure to make sure pressure does not exceed valve
rating.
▪ Maximum gas pressure rating will often be listed on gas valve.
▪ If pressure is too high, adjust gas pressure at system regulator or
contact gas utility for help.
▪ High gas pressure can damage gas valves, if gas pressure exceeding
the rating of the valve is measured, the gas valve should be replaced.
FLAME
MV STATUS
If all the LEDs are ashing
▪ An internal error has been detected, try resetting the control once, if
the problem reoccurs, replace the control
FLAME
MV STATUS
If all the LEDs are on continuously and the burner is lit
▪ The control is in the run mode and is functioning properly.
Table 5 (continued)
Fire or Explosion
Hazard
Can cause severe injury, death,
or property damage.
Do not use a ame simulation device for
troubleshooting. Using a ame simulator
could by-pass system safety and allow
gas ow without ame. Use the Flame
LED to conrm the ame signal presence
and strength.