C Overview Of Fault Codes - Vaillant eloBLOCK VE 14 EU I Series Installation And Maintenance Instructions Manual

Appendix
Code Parameter
D.149 Explanation for fault F.75
D.152 Type of output limiter
D.153 Output limiter value
D.154 Frost protection function
D.155 Current power
C Overview of fault codes
If a fault occurs, the display for the fault code replaces all of the other displays. "F" and the fault code appear alternately in
the display.
Code Meaning
F.000 Interruption: Temperature sensor (NTC)
F.010 Short circuit: Temperature sensor (NTC)
F.013 Short circuit: Cylinder temperature sensor (NTC)
F.020 Safety shutdown: Safety cut-out
F.022 Dry fire
F.024 Safety shutdown: Temp. incr. too fast
F.049 Fault: eBUS
F.063 Fault: EEPROM
F.070 Fault: Invalid Device Specific Number (no valid
Device Specific Number detected for the display
and/or electronics)
22
Values or explanations
Defined displays for the fault analysis
0 = No fault
1 = Pump blocked
2 = Electrical pump fault
3 = Dry fire
4 = Alarm, voltage at pump is too low
5 = Pressure sensor fault
6 = No signal from the pump (PWM)
Defines the phase for which the output has to be
limited.
0 = No limit
1 = Phase 1
2 = Phase 2
3 = Phase 3
4 = All phases
Only effective if D.152 has been set.
The value for the output limit in kW. This value is
subtracted from the current product output in the
phase(s).
Deactivation of the frost protection function (frozen
component)
The product's current output (continuously updated
information)
Remedy
Temperature sensor (NTC) defective
Temperature sensor cable (NTC) defective
Plug connection at the NTC defective
Plug connection at the electronics defective
Plug-on sensor has a short to earth at the housing
Short circuit in the cable harness
Sensor defective
–
Switch the product back on.
–
Bypass the safety cut-out. When the product is started up again,
replace the safety cut-out.
–
Bypass the temperature control. When the product is started up
again, replace the temperature control.
–
Replace the PCB.
–
Replace the cable harness.
–
Check the product for low water pressure (< 0.06 MPa (0.6 bar)).
–
Check all of the heating system's connections for leaks.
–
Check that the expansion vessel works correctly.
–
Purge all radiators.
–
Increase the filling pressure of the heating installation.
Pump blocked, insufficient pump output, air in product, system pressure
too low, non-return valve blocked/incorrectly installed
Short circuit on eBUS, eBUS overload or two power supplies with differ-
ent polarities on the eBUS
Electronics defective
–
Reset the product to its factory settings (D.096).
Scenario for replacing parts: Display and electronics were replaced at
the same time and the Device Specific Number was not reset.
Incorrect or missing coding resistor for the output range
Installation and maintenance instructions eloBLOCK 0020265768_01
Factory Own setting
setting
Not ad-
justable