335
EN
cod. 3541V620 - Rev. 00 - 05/2021
ALHENA TECH H
F50 - F53
Limit thermostat fault with para-
meter b06 = 1 or 4
No/poor water circulation in the
system
Check the circulating pump and heating system
Air in the system
Vent the system
Incorrect parameter
Check the correct parameter setting
A64
Maximum number of consecu-
tive Resets exceeded
Maximum number of consecutive
Resets exceeded
Disconnect the power supply to the boiler for
60
seconds
and then reinstate the boiler
F62
Calibration required
New card or boiler not yet calibra-
ted
Do the Calibration procedure [AUTO SETUP].
A88
Specific combustion control
errors or gas valve
Calibration activation with burner
lit.
Combustion problem, faulty gas
valve or PCB
Reset the fault and do the Calibration procedure
[AUTO SETUP].
If necessary, replace the gas valve or PCB.
F65 ÷ F98
Specific combustion control
errors
Fume ducts obstructed.
Low gas pressure.
Condensate trap blocked.
Fumes recirculation or combus-
tion problem
Check that the fume ducts and the condensate trap
are not blocked. Check the correct gas supply
pressure.
Do the CO
2
adjustment in TEST mode. If neces-
sary, do the Calibration procedure [AUTO SETUP].
A65 ÷ A97
Specific combustion control
errors
Fume ducts obstructed.
Low gas pressure (A78 - A84).
Condensate trap blocked.
Fumes recirculation or combus-
tion problem
Check that the fume ducts and the condensate trap
are not blocked. Check the correct gas supply
pressure.
Do the CO
2
adjustment in TEST mode. If neces-
sary, do the Calibration procedure [AUTO SETUP].
F99
Communication fault between
display and control unit
Connection cable interrupted or
not inserted
Check the connection
Misalignment of parameters bet-
ween control unit and display
Turn the power off and on
Factory values reset
Turn the power off and on
A98
Too many SW errors or error
occurred during board replace-
ment
Board replacement
Reset the fault and do the Calibration procedure
[AUTO SETUP].
Fume ducts obstructed.
Low gas pressure.
Condensate trap blocked.
Fumes recirculation or combus-
tion problem.
Initially solve the problem, reset the fault and check
correct ignition.
Do the Calibration procedure [AUTO SETUP].
Replace the board if necessary.
A99
Generic error
PCB hardware or software error
Reset the fault and check for correct ignition. Do
the Calibration procedure [AUTO SETUP]. If the
problem persists, replace the board.
F96
Specific flame combustion error
Unstable flame or unstable flame
signal after ignition.
Check the gas supply, fume ducts and condensate
drain. Check the correct position and state of the
electrode After about 3 minutes the error is reset.
A44
Multiple requests error
Repeated short-term requests
Check if there are pressure peaks in the DHW cir-
cuit. If necessary, modify parameter b11.
A80
Parasite flame signal after valve
closing
Electrode problem.
Gas valve problem.
PCB problem.
Check the correct position and condition of the
electrode.
Check the PCB.
Check the gas valve and replace it if necessary.
Fault code
Fault
Possible cause
Cure
Summary of Contents for ALHENA TECH H
Page 45: ...45 IT cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
Page 103: ...103 ES cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
Page 160: ...160 RO cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
Page 217: ...217 PL cod 3541V620 Rev 00 05 2021 ALHENA TECH H wygl d 48 wygl d 49 wygl d 50 5 6 6...
Page 231: ...B 231 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H...
Page 232: ...232 EL B CE IT ES RO PL GR cod 3541V620 Rev 00 05 2021 A ALHENA TECH H 8 8...
Page 238: ...238 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H FH Fh 2 10 0 FH 2 Stop...
Page 249: ...249 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 3 27 27 b09 1 1 2bar 0 7bar F37 3...
Page 250: ...250 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 2 2 1 2 2 B 2009 142 5 C 15 C A 2 3 B...
Page 253: ...253 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 2 5 B B 3 mm 3A...
Page 254: ...254 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H B HAR H05 VV F 3x0 75 mm2 8 mm B 230 V...
Page 262: ...262 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H B 2 7 B 0 5 lt B 37...
Page 271: ...271 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 1 41 2 41 B 1 42 42 OK NO 1 1...
Page 273: ...273 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 43 2 43 3 44 4 5 45 43 44 45 1 2 3 4 5...
Page 274: ...274 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H A B 1 2 5 49 2 6 50 5 46 47 1...
Page 275: ...275 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 48 49 50 5 6 6...
Page 276: ...276 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 2 3 4 51 52 1 1 2 2 3 3 4...
Page 277: ...277 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 2 venturi 3 53 54 A 1 2 55 2 1 1 1 2...
Page 330: ...330 EN cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
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