Installation / Operation Instruction Manual

24
TROUBLESHOOTING CHART – HONEYWELL V1.
LED Status
Control Status
Probable Cause
None (LED not on or
flashing)
Millivolt power is not
present. Light pilot.
1. Gas valve is functioning
normally.
2. Gas valve is not powered.
Light pilot.
One flash and three
second pause.
If set point knob is in
“PILOT” position, then
pilot flame is detected.
(no faults).
Gas valve is powered and waiting
for the set point knob to be turned
to a water temperature setting. If
the set point knob is at desired
setting the thermostat is satisfied.
LED strobe (two quick
flashes) and three
second pause.
Thermostat calling for
heat (no faults).
Water heater operating normally
LED on continuously.
Set point knob has been
recently turned to the
“OFF” position.
Set point know was recently turn
to “OFF” position. Wait until LED
goes out before attempting to
relight.
Two flashes and three
second pause.
Weak pilot flame
detected. System will
reset when pilot flame is
sufficient.
1. Gas valve is functioning
normally.
2. Gas valve is not powered.
Light pilot.
Three flashes and
three second pause
Insufficient water
heating. System will
reset.
1. Temperature sensor out of
calibration.
2. Possible short.
Four flashes and three
second pause
Excessive tank
temperature. System
must be reset.
1. Temperature sensor out of
calibration
2. Faulty gas valve.