HTP EL-399 - Manual (Page 70)

70
LP- 293 REV. 5.20.14
Fault Code F10
FLAME LOSS F10
The flame was lost while the boiler 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 boiler
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 boiler 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 boiler ignites.
4. Check the FLAME signal on the status display. It
should be above 1.0 when the boiler 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
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.
Fault Code F11
FALSE FLAME SIG F11
PUMP ON
There is flame when the control is not telling the
boiler to run. 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 on as
indicated on the second line of the display.
1. Look into window. If there is flame, turn the gas
off to the boiler 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 igniter and the flame rectification probe.
3. If the flame return sensor is not present after
turning off the gas supply, check the gas valve
electrical connection.
4. Repair condensate system as necessary. If
condensate has backed up and 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 cor-
rective 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 con-
trol 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 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 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 boiler 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 boiler
control board.
Figure 33