66
LP- 428 REV. 9.2.14
Fault Code F16
FLAP OPEN F16
Flapper valve physically stuck open.
1. Check flue system for obstructions.
2. Check proper communication between boilers.
3. Check operation of flapper valve.
4. Check wiring between valve and controller.
5. Replace valve-flapper.
Fault Code F20
CONDENSATE FULL F20
PUMP ON
The condensate trap is full. The red light will display
and the word LOCKOUT will flash. This code
indicates a serious safety issue. The boiler will not
restart until the cause is determined by a technician
and he pushes the RESET button on the display.
During this lockout fault, the pump will be off as
indicated on the second line of the display.
1. Check condensate lines for obstructions.
2. Check wiring from condensate reservoir to 926 control. Verify
the leads are green and red. Repair as necessary.
Fault Code F31
PROGRAM ERROR
F31
There was an error while programming the control and the
memory is corrupt. The boiler control will not function in
this state and the pump will be off as indicated on the
bottom line. This error only occurs if a technician is
programming the control and the programming function
fails. The only way to recover from this error is to repro-
gram the control. If this error occurs at any time other than
when a technician is servicing the boiler, the control has
failed and must be replaced by a qualified technician
The control must be re-programmed. If programming
does not solve problem, the control must be replaced.
Fault Code PP
CONTROL PROGRAMED
PP
The control has been programmed by a technician
or the factory. After programming, the control is left
in a locked out mode. Press the RESET key for at
least 1 second to begin use of the control.
Fault Code FOU
OUTDOOR SENSOR FOU
PUMP ON 1:45P
There is an issue with the outdoor sensor. It is
shorted, damaged, or disconnected from the
boiler.
1. Check outdoor sensor connections and wiring. Ensure the
sensor and wiring are intact and that the sensor is connected to
the boiler.
2. Check the outdoor sensor resistance with an ohmmeter. See
Figure 29 for correct outdoor sensor resistance.
3. Replace the outdoor sensor.
The following blocking codes will block operation until the control determines the situation safe for boiler operation.
Blocking Code E07
FLUE TEMP HIGH E07
PUMP OFF TIME
This display indicates that the flue sensor tem-
perature is excessive and above 210
o
F. When
this code is displayed, the boiler will not
respond to a demand for heat. When the flue
temperature decreases below 194
o
F, the
display will return to normal and allow the boiler
to respond to a heat demand. The bottom line
indicates the status of the pump. The pump will
remain off when this error is displayed.
Check the flue for obstructions or any sign of damage, especially
signs of excessive heat. Repair as necessary. Run the boiler and
check the flue temperature with an external thermometer. If the flue
temperature on the thermometer does not agree with the flue
temperature displayed in the status menu, inspect the wiring to the
flue temperature sensor in the boiler and repair as necessary. If the
wiring is intact, replace the flue sensor. If the flue temperature is
excessive on the status menu and the test thermometer reads the
same, check and adjust combustion controls on the boiler. If the
problem persists, inspect the target wall in the combustion chamber
and replace it if cracked or damaged.
Blocking Code E16
COMMON FLUE BLOCK E16
Common flue blocking or flapper valve
feedback failure.
1. Ensure the boilers are programmed correctly.
2. Check flue system for obstructions.
3. Check proper communication between boilers.
4. Check operation of flapper valve.
5. Check wiring between valve and controller.
6. Replace valve-flapper.
Blocking Code E19
LINE VOLTAGE
PUMP OFF E19
This display indicates that the line voltage fre-
quency is out of range. This could happen if the
boiler is being powered from a small gasoline
powered generator that is not functioning cor-
rectly or overloaded.
Inspect power wiring to boiler and repair as necessary. If connected
to line voltage, notify the power company. If connected to an
alternate power source such as generator or inverter, make sure the
line voltage frequency supplied by the device is 60 Hz.
Table 23
– Fault and Blocking Code Screens
Содержание MODCON1000
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Страница 47: ...47 LP 428 REV 9 2 14 Figure 27 Mod Con Cascade Master and Follower Wiring ...
Страница 48: ...48 LP 428 REV 9 2 14 Figure 28 Mod Con Internal Connection Diagram LP 428 K ...
Страница 70: ...70 LP 428 REV 9 2 14 Figure 31 MOD CON 1000 External Parts Blowout ...
Страница 71: ...71 LP 428 REV 9 2 14 Figure 32 MOD CON 1700 External Parts Blowout ...
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