Bradford White MI30T Service Manual page 6

Honeywell Gas Control Troubleshooting Chart
Observe green LED indicator on
Gas Control. Error 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
Five flashes and
three second
pause
Six flashes and
three second
pause
Seven flashes and
three second
pause
Eight flashes and
three second
pause
6 6
Flammable Vapor Ignition Resistant Water Heaters
Control Status
Thermostat/well sensor fault.
Water leak detected by accessory
module.
Gas Control electronic fault
detected.
Standing pilot remains on while set
point knob is in "OFF" position.
Probable Cause
1. Damage to the temperature
sensor.
2. Temperature sensor resistance
out of range.
Excessive amount of water in drain
pan/water dam.
1. Control need to be reset.
2. Control is wet or physically
damaged.
Pilot valve stuck in open position.
6
Green LED Indicator
Service
Procedure
1. See service
procedure RG-VI
1. Check T&P valve
2. Check all water
fittings.
3. Pressurize and leak
test tank.
1. Reset Gas Control
2. Replace Gas
Control.
Replace Gas Control.