Bradford White RG1PV50S Series Service Manual page 15

PV Series
Observe green LED indicator on
electronic 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 Control Status
None, control
No electrical
LED not on or
power
flashing
Stand-by mode,
Short flash, once
every four
Waiting for call
seconds
for heat (no fault).
Thermostat
"Heartbeat"
alternates calling
bright/dim
for heat (no fault).
Weak pilot signal
Short flash once
on last call for
per second
heat.
Pressure switch
Two flash, three
not working-
second pause
closed position.
Pressure switch
Three flash, or blower temp.
three second switch not
pause working -open
position.
Excessive tank
Four flash, three temperature.
second pause
System must be
reset.
Undesired-false
Five flash, three
pilot flame
second pause
present.
Probable Cause
Control power switch in "OFF" position.
Supply voltage interrupted.
Temperature demand is satisfied
Tank temperature below set point of
thermostat.
1. Unstable pilot.
2. Pilot tube block or restricted.
3. Oxidation build up on pilot electrode.
4. Wire damage to pilot assembly or bad
connection at gas valve.
1. Pressure switch tubing kinked or blocked.
2. Blocked pressure tap on switch or blower.
3. Faulty pressure switch.
1. Vent blockage or improper vent
configuration.
2. Pressure switch tubing kinked or blocked.
3. Faulty pressure switch.
4. Blower not spinning up to speed.
5. Blower temp or exhaust temp too high.
6. Faulty blower temperature switch.
1. Temperature sensor out of calibration.
2. Faulty gas control.
3. Plumbing leak.
1. Pilot valve stuck in open position.
Service
Procedure
Turn power on
Normal operation.
Adjust thermostat to
temp level.
Normal operation.
Adjust thermostat to
temp level.
Page 19
Page 20
1. Check vent or vent
tables.
2 & 3 Page 20
4. Page 22
5 & 6 Page 24
1. Page 25
2. Replace gas control,
page 31
Replace gas control,
page 31
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