Westinghouse WBRE80 User Manual page 55

FLUE SENSOR F04
PUMP ON TIME
SUPPLY HIGH F05
PUMP ON TIME
RETURN TEMP HIGH F06
PUMP ON TIME
NO FLAME ON IGN F09
PUMP ON TIME
The dual flue sensor contains two sensing
elements within a single
indicates that one or both halves of the
flue temperature sensor has failed OR the
difference between the dual sensor readings
o
is greater than 18 F. This is a serious safety
issue and the boiler will not restart until the
sensor is replaced by a technician and he
pushes the RESET button on the display.
This situation is indicated by the red light on
the display and the flashing word LOCKOUT.
During this lockout fault, the pump will be on
as indicated on the second line of the display.
F05 indicates the boiler supply temperature
is excessive. When accompanied by the
red FAULT light and LOCKOUT flashing on
the display, this code indicates the supply
sensor temperature has exceeded 230
a serious safety issue exists. The boiler will
not restart until a technician determines and
repairs the cause of excessive temperature
and pushes RESET on the display.
If the FAULT light is not illuminated and
this message is displayed, the supply
temperature of the boiler is at or above
o
210 F. The message will clear automatically
when the temperature drops below 194
During the time that this fault is displayed,
the pump will be on.
This display indicates that the boiler
return temperature is excessive. When
accompanied by the red FAULT light and
LOCKOUT flashing on the display, this code
indicates that the return sensor temperature
o
has exceeded 230 F and a serious safety
issue exists. The boiler will not restart until a
technician determines and repairs the cause
of excessive temperature and pushes RESET
on the display.
If the red FAULT light is not illuminated and
this message is displayed, then the return
temperature of the boiler is at or above
o
210 F. The message will clear automatically
when the temperature drops below 194
During the time that this message or lockout
fault is displayed, the pump will be on.
The boiler tried to ignite four times during
one heat call and failed. This is a serious
safety issue as indicated by the illuminated
red light and the word LOCKOUT flashing on
the display. The boiler will not restart until a
technician determines and repairs the cause
of ignition failure and pushes RESET on the
display. During this lockout fault, the pump
will remain on.
body. F02
1. Inspect the dual flue sensor for physical damage,
blockage, or corrosion and replace it if necessary.
2. Check the electrical connection to the dual flue sensor
and repair as necessary. Verify 5 VDC by checking in Molex
connector. If there is not 5 VDC, check the harness. If
harness and sensors are OK, replace control.
NOTE: The boiler will reset automatically. Verify sensor
resistance values of each half of the dual sensor by
referencing chart in this manual.
3. Replace sensor if necessary.
o
F and 1. Check circulator pump operation.
2. Ensure adequate flow through the boiler by accessing
the status menu and determining there is less than a 50°F
rise from the return thermistor to the supply thermistor.
3. Check the direction of flow off the boiler circulator. (See
Piping Details in this manual.)
4. Troubleshoot the dual supply thermistor by following
steps in F02.
o
F.
1. Check circulator pump operation.
2. Ensure adequate flow through the boiler by accessing
the status menu and determining there is less than a 50°F
rise from the return thermistor to the supply thermistor.
3. Check the direction of flow on boiler circulator. (See
Piping Details in this manual.)
4. Troubleshoot thermistor by following steps in F02.
o
F.
1. Watch the igniter through the observation window.
2. If there is no spark, check the spark electrode for the
proper 1/4" gap between the burner.
3. Remove any corrosion from the spark electrode.
4. If there is a spark but no flame, check the gas supply to
the boiler.
5. If there is a flame, check the flame current.
6. Check any flue blockage or condensate blocks.
7. Replace the ignitor.
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WHL-052 Rev. 4.28.16