Fault Codes - Glow-worm Betacom 24a Installation And Servicing

MAINTENANCE
16.3

fault codes

The faults described in this chapter should be
i
carried out by a qualified engineer and if needed by
the After Sales Service.
fault
Description
codes
F00 Flow heating temperature sensor fault
F01 Return heating temperature sensor fault
F10 Flow heating temperature sensor fault
F11 Return heating temperature sensor fault
F20 Overheating fault
F22 Water pressure of the installation (<0.3 bar)
Maximum temperature difference reached
F23
between return and flow heating
F24 Water circulation fault
F26 Fault in gas valve motor.
F27 Flame detection fault.
F28 Ignition fault
F29 Loss of flame during operation
F32 Incorrect air pressure
F49 EBUS voltage fault
F61
F62
F63
Fault in the main board
F64
F65
F67
F68 Fluctuation of flame signal
User interface incompatible with the main
F70
board
F71 Flow heating temperature sensor fault
- 32 -
Cause
Sensor open circuit
Return heating temperature sensor
disconnected
Sensor short-circuit
Return heating temperature sensor
shorted.
Overheating safety device activated
(97°C)
Return water valve closed
Pump disconnected
Leak in the installation
Water circulation fault
Malfunction of the pump (excessively
rapid temperature increase)
Disconnected or defective cables
Abnormal flame detection
No return gas / Insufficient gas flow
Gas valve incorrectly adjusted
Defective firing electrode and flame
control / Defective igniter unit
Incorrect fan speed.
Fault in EBUS line
Short circuit in EBUS connector
Gas valve command fault
Gas valve closure fault
Fault in the main board memory
Rapid fluctuation of return or flow
heating sensor.
Excessive main board temperature
Flame signal fault in the main board
No return gas / Insufficient gas flow
Gas valve incorrectly adjusted
Defective firing electrode and flame
control / Defective igniter unit
Incorrect product code
Flow heating temperature sensor
unclipped or defective (no
temperature variation)
Solution
• Check the sensor's connections.
• Check the wiring harness.
• Check the sensor.
• Check the operation of the pump.
• Check the wiring harness.
• Check that the flow and return heating isolation
valves are open.
• Fill the installation.
• Purge the installation.
• Check the pump connections.
• Check the flow and return heating sensor
connections.
• Check that there are no leaks.
• Check the flow and return heating sensor
connection.
• Check the pump speed.
• Check that the flow and return heating isolation
valves are open.
• Check the gas valve connections.
• Check the operation of the gas valve.
• Check the operation of the condensate pump (option).
• Check the flame detection electrode.
• Check the main board.
• Check the igniter unit.
• Check the return gas circuit (gas valve open).
• Check the observe the flame picture and check
the CO setting.
2
• Check the igniter unit connections.
• Check the state of the electrode (corrosion).
• Check the entire flue system.
• Check the fan's electrical connections.
• Check that the eBus controls are fitted and wired
correctly.
• Check the main boards connections.
• Check the main board.
• Check the appliance DSN number is correct.
• Reset the appliance.
• Check the return gas circuit (gas valve open).
• Check the observe the flame picture and check
the CO setting.
2
• Check the igniter unit connections.
• Check the state of the electrode (corrosion).
• Check that the appliance DSN code on the screen
matches the product code of the nameplate (in the
event of a fault and the appliance DSN does not
appear, consult menu.d.93 reserved for the code).
• Check the boards reference.
• Check the sensor connections.
• Make sure that the sensor is clipped to the tube.
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