
Error code Message
Description
H02.00
RESET IN PROGRESS
Reset under way
H02.02
H02.03
CONFIGURATION
ERROR
Central unit PCB replaced: boiler not configured.
H02.04
PARAMETER ERROR
Incorrect configuration of the central unit PCB parameters
H02.05
CSU
Memory error
H02.07
WATPRESSURE
ERROR
Insufficient water pressure
Check the hydraulic pressure in the heating circuit.
H02.09
PARTIAL BLOCK
BL input on the central unit PCB terminal block open
H02.10
FULL BLOCK
BL input on the central unit PCB terminal block open
H02.23
SYSTEM FLOW ERROR Flow problem
H02.25
TAS ERROR
Titan Active System short circuited or on an open circuit
H02.36
FUNCTIONAL DEVICE
DISCONNECTED
No communication between the central unit PCB and the additional circuit PCB
H02.37
UNCRITICAL DEVICE
DISCONNECTED
No communication between the central unit PCB and the additional circuit PCB
H02.40
FUNCTION
UNAVAILABLE
Function not available in the control system
H02.45
ERROR CAN
CAN error.
H02.46
ERROR CAN
CAN error.
H06.01
HP UNIT FAILURE
Heat pump outdoor unit defective
H07.00
BURNER FAULT
No ignition arc
Burner control and safety box defective
No flame signal
Air present in the oil circuit
Flame present but flame signal weak
8.1.2
Fault codes
If a fault code is still present after several automatic start-up attempts, the
boiler switches to error mode.
If a fault code is still present after several automatic start-up attempts, the
heat pump switches to error mode.
The boiler will only resume normal operation once the causes of the fault
have been eliminated by the installer.
The heat pump will only resume normal operation once the causes of the
fault have been eliminated by the installer.
When one of the following codes is displayed and the boiler cannot restart
automatically, contact a maintenance technician.
When one of the following codes is displayed and the heat pump cannot
restart automatically, contact a maintenance technician.
Tab.34 List of fault codes
Fault code Message
Description
E00.00
SENS T FLOW OPEN
Boiler flow sensor in open circuit
E00.01
SENS T FLOW CLOSED Boiler flow sensor short circuited
E01.04
FLAME LOSS ERROR
No flame signal
E01.12
RETURN HIGHER
THAN FLOW
Return temperature higher than the flow temperature for 5 minutes
E02.13
BLOCKING INPUT
Input BL open.
E02.15
EXTERNAL CSU
TIMEOUT
Memory read error or memory entry error.
E02.24
SYSTEM FLOW
LOCKING
Heating water flow problem
8 Troubleshooting
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200 ESL HYBRID
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