HTP 500 HL, Инструкции по установке и запуску

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67
LP- 446 REV. 9.3.14
Fault Code F10
FLAME LOSS F10
The flame was lost while the heater was firing 3
times during 1 demand call. The red light will
display and the word LOCKOUT will flash. This
code indicates a serious safety issue. The
heater will not restart until the cause of flame
loss is determined by a technician and he
pushes the RESET button on the display.
During this lockout fault, the pump will be on as
indicated on the second line of the display.
1. Monitor the gas pressure to the unit while in operation.
2. Assure that the flame is stable when lit.
3. Check to see if the display readout changes from “GAS VALVE
ON” to “RUN” within a few seconds after the heater ignites.
4. Check the FLAME signal on the status display. It should be above
1.0 when the heater is firing.
5. If the signal reads less than 1 microampere, clean the flame
rectifier and spark probe.
6. If the problem persists and the ‘FLAME” signal is still less than
1.0, replace the flame probe and spark igniter probe.
7. The flame signal should be steady after the heater 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.
Fault Code F11
FALSE FLAME SIG F11
PUMP ON
There is flame when the control is not telling
the heater to run. The red light will display and
the word LOCKOUT will flash. This code
indicates a serious safety issue. The heater 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 on as indicated on the second line of the
display.
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 1.0 when
the burner is not lit, replace the spark ignitor and the flame recti-
fication probe.
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 rectifier probe, it may
conduct the signal to ground, giving a false reading.
Fault Code F13
FAN SPEED ERROR F13
PUMP ON
The fan is not running at the speed that the
control has commanded it to run at. The fan
speed had been more than 30% faster or
slower than the commanded speed for more
than 10 seconds. The red light will display and
the word LOCKOUT will flash. This code
indicates a serious safety issue and the heater
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 on as indicated on the second
line. 1. Check the combustion air fan wiring.
2. Measure the DC voltage from the red fan wire to ground while it is
connected to the fan. It should be between 24 to 40 volts. If it is
lower than 24 volts, check for excessive external loads connected to
the heater sensor terminals. 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 heater
control board.
Fault Code F15
APS OPEN F15 Flapper valve feedback 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.
Figure 34