LP-314 Rev. 012 Rel. 003 Date 9.27.19
46
FLAME LOSS
PUMP ON F10
The flame was lost while the unit was lit 3 times
during 1 demand call. The red fault light and
LOCKOUT flashing on the display indicate a
serious safety issue. The unit will not restart until
the technician repairs the cause of flame loss
and resets the unit. During this lockout fault, the
pump will be on as indicated on the bottom line
of the display.
1. Monitor gas pressure to the unit while in operation.
2. Ensure the flame is stable when lit.
3. Check to see if the display readout changes from “GAS
VALVE ON” to “RUN” a few seconds after the appliance ignites.
4. Check the FLAME signal on the status display. It should be
above 1.0 when the unit 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 unit has been
firing for 1 minute and is normally at 5.0 to 9.0. If not steady,
disassemble the burner door and check the burner and its
sealing gaskets.
FALSE FLAME SIG
PUMP ON F11
F11 indicates flame when the control is not telling
the unit to run. The red fault light and LOCKOUT
flashing on the display indicate this code is a
serious safety issue. The unit will not restart until
a technician repairs the cause of the lockout and
resets the unit. During this lockout fault, the
pump will be on as indicated on the second line
of the display.
1. Look into the 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 igniter and the
flame rectification 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 the 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.
FAN SPEED ERROR
PUMP ON F13
The fan speed had been more than 30% faster
or slower than the control commanded speed
for more than 10 seconds. The red fault light
and flashing LOCKOUT on the display indicate a
serious safety issue. The unit will not restart until
the technician repairs and resets the unit. During
this lockout fault, the pump will be on as indicated
on the second line of the display.
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 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 appliance control board.
PROGRAM ERROR
PUMP OFF F31
There was an error while programming the
control. The control’s memory could be corrupt.
The appliance control will not function in this
state and the pump will be off. The only way to
recover from this error is to reprogram the control.
If this error occurs at any time other than when
a technician is servicing the unit, the control has
failed and must be replaced.
Control must be reprogrammed. If reprogramming does not
solve problem, control must be replaced.
CONTROL PROGRAMED
PP
The control has been programmed by a technician
or the factory. After programming, the control was
left in a locked out mode. Press
RESET
to begin
use of the control.
Press
RESET
for at least one second.
Table 21 - Fault Codes
Part 12 - Maintenance
Allowing the appliance to operate with a dirty combustion chamber
will hurt operation. Failure to clean the heat exchanger as needed
by the installation location could result in appliance failure, property
damage, personal injury, or death. Such product failures ARE NOT
covered under warranty.
In unusually dirty or dusty conditions, care must be taken to keep
appliance cabinet door in place at all times. Failure to do so VOIDS
the warranty.
Hydrogen gas can build up in a hot water system served by
this appliance that has not been used for a long period of time
(generally two weeks or more). When opening a hot water faucet
in a system that has been out of use for a time, keep all ignition
sources (electrical appliances, open flame, etc.) away from the
faucet. If hydrogen is present, there will be a sound of air escaping
as water begins to flow. Allow the water to run for a few minutes
to dissipate built up hydrogen from the system. Failure to follow
these instructions can result in property damage, personal injury,
or death.