LP-517 Rev. 000 Rel. 019 Date 7.21.20
53
BURNER TEMP ERR F28
PUMP ON TIME
The boiler has generated a “BURNER
TEMP BLOCK E28” more than five times
in ten minutes during a single demand.
When this code is displayed, the boiler
will not respond to a demand for heat.
The bottom line indicates the status of
the pump.
The pump will remain on when this error
is displayed.
1. Check sensor by turning off the gas and allowing the unit to go
through pre-purge and post purge cycles. While air is flowing through
the burner check the burner sensor value on the display. This value
should similar to the current intake air temperature. If this value is
much different than the current intake air, check sensor resistance
and wiring. If resistance values are out of range replace sensor.
2. If sensor is ok, check combustion, often a rich combustion setting
elevates burner temperatures. Ensure there are no blockages on
either the intake or the exhaust. Confirm the combustion is set
to proper CO2 numbers, especially on low fire. After adjusting
combustion, re-start the boiler and observe the burner temperature
on the display. This should be done both on high and low fire.
BURNER SENSORERR F30
PUMP ON TIME
1. Burner Sensor has exceeded 330
o
F or
is shorted.
2. Burner Sensor temperature is less than
-31
o
F, or is open.
Inspect the burner sensor for physical damage or corrosion and
replace it if necessary. Check the electrical connection to the burner
sensor and repair as necessary. Measure the resistance of the sensor
and refer to the sensor chart in this manual. The temperature on the
chart should be close to the same as the temperature in the burner.
If not, replace the burner sensor.
PROGRAM ERROR F31
PUMP OFF
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
reprogram 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 reprogrammed. If programming does not solve
the problem, the control must be replaced.
HARD FAULT COND F41 This error indicates there is an internal
fault in the circuit within the control
connected to the condensate switch.
1. Inspect the ground wires for damage or loose connections.
2. Inspect the condensate wiring for damage and repair as necessary.
3. Ensure no high voltage wires are routed in parallel with the
condensate low voltage wiring.
4. Replace control.
HARD FAULT LWCO F42 This error indicates there is an internal
fault in the LWCO circuit.
1. Inspect the ground wires for damage or loose connections.
2. Inspect the LWCO wiring for damage and repair as necessary.
3. Ensure no high voltage wires are routed in parallel with the LWCO
low voltage wiring.
4. Replace control.
AD SAFT FAULT F43
The temperature of either the burner,
flue, or supply sensors has risen nine
degrees in 100 milliseconds and not
returned to normal within 1 second.
Ensure the connections to the burner, flue, and supply sensors are
intact. If wires are intact, check sensor resistance. If the problem
persists or the sensors are out of normal resistance range, replace
the sensors.
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
RESET
for at least 1 second to use the control.
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 table
in this manual for correct outdoor sensor resistance.
3. Replace the outdoor sensor.
