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Service Call 0844 736 9138, Technical Help (Chargeable) Call 0906 802 0253
Fault
codes Description
Cause
Solution
F00
Flow heating temperature sensor fault
Sensor open circuit
• Check the sensor’s connections.
• Check the wiring harness.
• Check the sensor.
F01
Return heating temperature sensor fault
Return heating temperature sensor
disconnected
F10
Flow heating temperature sensor fault
Sensor short-circuit
F11
Return heating temperature sensor fault
Return heating temperature sensor
shorted.
F20
Overheating fault
Overheating safety device activated
(97°C)
• Check the operation of the pump.
• Check the wiring harness.
• Check that the fl ow and return heating isolation
valves are open.
F22
Water pressure of the installation (<0.3 bar)
Return water valve closed
Pump disconnected
Leak in the installation
• Fill the installation.
• Purge the installation.
• Check the pump connections.
• Check the fl ow and return heating sensor
connections.
• Check that there are no leaks.
F23
Maximum temperature difference reached
between return and fl ow heating
Water circulation fault
• Check the fl ow and return heating sensor
connection.
• Check the pump speed.
F24
Water circulation fault
Malfunction of the pump (excessively
rapid temperature increase)
• Check that the fl ow and return heating isolation
valves are open.
F26
Fault in gas valve motor.
Disconnected or defective cables
• Check the gas valve connections.
• Check the operation of the gas valve.
• Check the operation of the condensate pump (option).
F27
Flame detection fault.
Abnormal fl ame detection
• Check the fl ame detection electrode.
• Check the main board.
• Check the igniter unit.
F28
Ignition fault
No return gas / Insuffi cient gas fl ow
Gas valve incorrectly adjusted
Defective fi ring electrode and fl ame
control / Defective igniter unit
• Check the return gas circuit (gas valve open).
• Check the observe the fl ame picture and check
the CO
2
setting.
• Check the igniter unit connections.
• Check the state of the electrode (corrosion).
F29
Loss of fl ame during operation
F32
Incorrect air pressure
Incorrect fan speed.
• Check the entire fl ue system.
• Check the fan’s electrical connections.
F49
EBUS voltage fault
Fault in EBUS line
Short circuit in EBUS connector
• Check that the eBus controls are fi tted and wired
correctly.
F61
Fault in the main board
Gas valve command fault
• Check the main boards connections.
• Check the main board.
• Check the appliance DSN number is correct.
• Reset the appliance.
F62
Gas valve closure fault
F63
Fault in the main board memory
F64
Rapid fl uctuation of return or fl ow
heating sensor.
F65
Excessive main board temperature
F67
Flame signal fault in the main board
F68
Fluctuation of fl ame signal
No return gas / Insuffi cient gas fl ow
Gas valve incorrectly adjusted
Defective fi ring electrode and fl ame
control / Defective igniter unit
• Check the return gas circuit (gas valve open).
• Check the observe the fl ame picture and check
the CO
2
setting.
• Check the igniter unit connections.
• Check the state of the electrode (corrosion).
F70
User interface incompatible with the main
board
Incorrect product code
• 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.
F71
Flow heating temperature sensor fault
Flow heating temperature sensor
unclipped or defective (no
temperature variation)
• Check the sensor connections.
• Make sure that the sensor is clipped to the tube.
F72
Permanent temperature difference between
fl ow and return heating sensors
Mismatch between the fl ow and return
heating temperatures (permanent
difference)
• Check temperature sensors connections.
• Replace faulty sensors.
Содержание CaprizPlus 24
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