Troubleshooting Chart - Bradford White RG130T*N Series Service Manual

White Rodgers Gas Control Troubleshooting Chart
Symptom
Pilot will not light.
Pilot will not stay lit
when button is
released.
Pilot will light but
the main burner
will not come on.
4
4
Flammable Vapor Ignition Resistant Water Heaters
Probable Cause
1. No incoming gas or too low
gas pressure.
2. Gas control knob set to
wrong position.
3. Pilot light button not being
fully depressed when
attempting to light pilot.
4. Pilot orifice or pilot tube is
obstructed or kinked.
5. Pilot electrode not sparking to
pilot.
6. Piezo igniter not functioning.
1. Poor thermocouple
connection at combination
thermostat/gas valve.
2. Thermocouple not fully
engaged in pilot assembly
bracket.
3. Pilot flame is not fully
enveloping the thermocouple
"hot" junction.
4. Weak or defective
thermocouple.
5. Open ECO on
combination thermostat/
gas valve.
6. Defective magnet in
combination thermostat/gas
valve.
7. Resettable thermal switch
has opened.
1. Combination thermostat/gas
valve set too low for desired
water temperature.
2. Combination
thermostat/gas valve
temperature is satisfied.
3. Insufficient gas supply or
low gas pressure.
4. Combination thermostat/gas
valve has wide differential or
is out of calibration.
Corrective action
1. Turn on gas supply and/or check
line pressure.
2. Review lighting instruction. Set
combination/thermostat gas valve
to correct position.
3. Review lighting instruction. Fully
depress pilot lighting button.
4. Clean, repair or replace.
5. Verify correct electrode position.
Replace pilot assembly.
6. Replace piezo igniter.
1. Check connection at combination
thermostat/gas valve. Proper
tightness should be finger tight
plus ¼ turn.
2. Inspect thermocouple to ensure
that it is fully engaged into pilot
bracket.
3. Adjust tip of thermocouple to be
fully engulfed by pilot flame.
4. Check thermocouple and replace
if necessary.
5. Check ECO continuity and replace
combination thermostat/gas valve
if necessary.
6. Check magnet operation and
replace combination
thermostat/gas valve if necessary.
7. Determine cause of switch
activation. To reset, depress
button on resettable thermal
switch located on inner door.
1. Adjust temperature dial on
combination thermostat/gas
valve.
2. Check temperature dial
setting on combination
thermostat/gas valve.
3. Check gas supply and line
pressure.
4. Check combination
thermostat/gas valve for
proper operation, replace if
necessary.
Service
Procedure
1. See Service
Procedure RG-V,
Page 12.
2. See Service
Procedure RG-III,
Page 10.
3. See Service
Procedure RG-III,
Page 10.
4. See Service
Procedure RG-IV,
Page 11.
1. See Service
Procedure RG-II,
Page 8.
2. See Service
Procedure RG-V,
Page 14.
3. See Service
Procedure RG-V,
Page 13.
1. See installation
and operation
manual.
2. See Service
Procedure RG-V,
Page 12.
3. See Service
Procedure RG-V,
Page 12.