28
TROUBLESHOOTING CHART – HONEYWELL V2.
LED Status
Control Status
Probable Cause
None (LED not on or
flashing)
Indicates control is off.
Main and pilot burner are
off.
Gas valve is functioning
normally. Gas valve is not
powered. Light pilot.
One flash every four
seconds
(LED green)
Not an error. Indicates
pilot is lit and main
burner is off.
You can now turn the knob to a
desired setpoint temperature
One flash every
second
(LED green)
Not an error. Indicates
main valve is open and
main burner is lit.
None. Control will automatically
shut main burner off when water
temperature reaches the
setpoint temperature.
Two flashes and three
second pause
(LED yellow)
Low thermopile voltage;
main burner not lit.
Check thermopile and its
connections. Check pilot flame.
Four flashes and three
second pause
(LED red)
Temperature cut-out limit
reached, causing
shutdown.
Excessive temperatures may
have been reached. Shut off the
control and reduce the water
temperature. Thoroughly verify
control operation, replace if
exceeding setpoint.
Five flashes and three
second pause
(LED red)
Electronics, sensor, or
gas valve fault detected.
Control may be wet or
damaged. Verify all connections
are tight; if problem persists
replace the control.
Solid ON
(LED red)
Not an error. Indicates
that the control is in
shutdown mode.
None; wait until LED turns off if
you want to restart system.
