WHL-038 Rev. 1.29.16
55
FLAME LOSS F10
PUMP ON TIME
The flame was lost 3 times while the boiler
was firing during 1 demand call. 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 flame loss and pushes
RESET
on the display. During this lockout
fault, the pump will be on.
1. Monitor gas pressure to the unit while in operation.
2. Assure the flame is stable when lit.
3. Check if the display readout changes from “GAS VALVE
ON” to “RUN” within a few seconds of boiler ignition.
4. Check the FLAME signal on the display. It should be
above 2.5uA when the boiler is firing.
5. If the signal reads less than 2.5uA, clean the spark
probe.
6. If the problem persists and the ‘FLAME” signal is still
less than 2.5uA, replace the spark igniter probe.
7. The flame signal should be steady after the boiler has
been firing for 1 minute and is normally at 5.0 to 9.0. If the
flame signal is not steady, disassemble the burner door
and check the burner and its sealing gaskets.
FALSE FLAME SIG F11
PUMP ON TIME
There is flame when the control is not telling
the boiler to run. 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 and pushes
RESET
on the display. During this lockout
fault, the pump will be on.
1. Look into window. If there is flame, turn the gas off to
the unit at the service valve and replace the gas valve.
2. If the flame signal on the status menu is greater than
2.5uA when the burner is not lit, replace the spark ignitor.
3. If the flame signal is not present after turning off the gas
supply, check the gas valve electrical connection.
4. Check for condensate backup. Repair condensate
system as necessary. If condensate has partially filled
the combustion chamber, the refractory wall may be
damaged and should be replaced.
5. Turn the gas on at the service valve after corrective
action is taken.
6. If the refractory wall falls against the spark ignitor, it
may conduct the signal to ground, giving a false reading.
FAN SPEED ERROR F13
PUMP ON TIME
The fan is not running at the speed
determined by the control. Fan speed has
been more than 30% faster or slower than
the commanded speed for more than 10
seconds. This is a serious safety issue as
indicated by the illuminated red light and
the word LOCKOUT flashing on the display
.This boiler will not restart until a technician
determines and repairs the cause and pushes
RESET
on the display. During this lockout
fault, the pump will be on.
1. Check the combustion fan wiring.
2. Measure DC voltage from the red fan wire to ground
while it is connected to the fan. It should be between 24
and 40 volts. If it is lower than 24 volts, check for excessive
external loads connected to the boiler sensor terminals
3. Disconnect the 5 pin plug from the fan and check the
voltage on the red wire again. If it is now between 24-40
volts, replace the fan. If it is still below 24 volts replace the
boiler control board.
CONDENSATE FULL F20
PUMP OFF TIME
The condensate trap is full. 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
and pushes
RESET
on the display. During this
lockout fault, the pump will be off.
1. Check condensate lines for obstructions.
2. Check float switch in condensate reservoir.
3. Check wiring from condensate reservoir to 928 control
and repair as necessary.
Screen
Description
Possible Remedy
LOW WATER BOILER F21
PUMP OFF TIME
Water level in the boiler is low.
1. Check boiler feed water system to be sure it is supplying
make-up water to the boiler system.
2. Ensure all air is bled from the system.
3. Check for leaks in the boiler and system piping and
repair as necessary.
4. Inspect low water cutoff probe and wiring for damage
and repair and replace as necessary.
Содержание WBCETNG1000
Страница 14: ...WHL 038 Rev 1 29 16 14 Figure 6 Specifications and Dimensions NOTE All Dimensions Are Approximate ...
Страница 35: ...WHL 038 Rev 1 29 16 35 Figure 24 CascadeTermination Plug Detail Figure 25 Cascade Master and FollowerWiring ...
Страница 36: ...WHL 038 Rev 1 29 16 36 Figure 26 Internal Connection Diagram ...
Страница 65: ...WHL 038 Rev 1 29 16 65 Figure 44 Exterior Replacement Parts ...
Страница 66: ...WHL 038 Rev 1 29 16 66 Table 27 Optional Jacket Replacement Parts Part 15 Installing the Optional Jacket ...
Страница 73: ...WHL 038 Rev 1 29 16 73 Maintenance Notes ...