Bradford White URG130T*N Series, Руководство по обслуживанию

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6
ECO Defender Series
6
Observe green LED indicator on
electronic 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 Control Status Probable Cause
None (LED not on or
flashing)
Millivolt power is not
present. Light Pilot
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. Turn set
point knob to desired
setting. If set point knob is
at the desired setting the
thermostat is satisfied (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
already at the desired
setting, temperature
demand is satisfied (no call
for heat).
LED strobe (two quick
flashes) and three
second pause.
Thermostat calling for heat
(no faults).
Tank temperature below
setpoint of thermostat.
LED on continuously.
Set point knob has been
recently turned to the
"OFF" position. Wait until
LED goes out before
attempting to relight.
Set point knob was turned
to "OFF" position.
Two flashes and three
second pause.
Weak pilot flame detected.
System will reset when
pilot flame is sufficient.
1. Unstable pilot.
2. Pilot tube block or
restricted.
Three flashes and
three second pause.
Insufficient water heating.
System will reset.
1. Thermal sensor and
chamber temperature
sensor out of
calibration.
2. Possible short.
Four flashes and three
second pause.
Excessive tank
temperature. System must
be reset.
1. Thermal sensor out of
calibration.
2. Faulty gas valve.