Bradford White RG130T*N Series Service Manual page 8

Honeywell V2 Gas Control Troubleshooting Chart
Observe colored LED indicator on Gas Control.
Status flash codes are displayed with a three
second pause before repeating. Check and repair
the system as noted in the troubleshooting table
below.
LED Status
None (LED not on
or flashing)
One flash every
four seconds
(LED green)
One flash every
second
(LED green)
Two flashes
(LED yellow)
Four flashes
(LED red)
Five flashes
(LED red)
Six flashes
(LED red)
Solid ON
(LED red)
8
8
Flammable Vapor Ignition Resistant Water Heaters
Control Status
Gas valve is functioning normally.
Millivolt power is not
Gas valve is not powered. Light
present. Light pilot.
pilot.
Not an error. Indicates
You can now turn the know to a
pilot is lit and main
desired setpoint temperature
burner is off.
None. Control will automatically
Not an error. Indicates
shut main burner off when water
main valve is open and
temperature reaches the setpoint
main burner is lit.
temperature.
Low thermopile voltage;
Check thermopile and its
main valve not turned
connections. Check pilot flame.
ON.
Check the valves and the water
temperature sensor. Reduce the
water temperature setpoint.
Temperature cut-out
Thoroughly check
limit reached.
out main valve operation and water
temperature control before walking
away.
Check water temperature sensor
and its connection for open
Water temperature
circuits, shorts, or differences in
sensor failure.
resistance between the two sensor
elements.
Tank leakage detected Control recovers after receiving
by accessory module. message from accessory module.
Not an error-indicates
None; wait until LED turns off if
that the control is in
you want to restart system.
OFF mode.
Probable Cause Service Procedure
If the pilot will not stay lit
replace pilot assembly. If
problem persists, replace
gas control.
Normal operation.
Normal operation.
1. See service procedure
IV.
2. See service procedure II.
3. See service procedure II.
Replace gas control
Replace gas control
1. Check T&P valve.
2. Check all water fittings.
3. Pressurize and leak test
tank.
LED will go out and the
control will function normally
the pilot is lit.