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4.1
Display diagnostic
The display indications provide help in the diagnosis of
fault finding.
The control panel display gives other information for the
user.
The following table gives fault code, error and the reson
for the fault.
Er 01 + RESET Lack of burner ignition
Er 02 + RESET Safety thermostat lockout
Er 03 + RESET Other faults
Er 04 +
Faulty primary circuit (no water or
absence of flow)
Er 05 +
Faulty fan control system
Er 06 +
Faulty c.h. temperature probe
NTC
Er 08 +
Faulty external temperature probe
NTC (if fitted)
Er 09 +
Faulty flue temperature probe
NTC
Er 10 + RESET
Lockout --- flue temperature probe
NTC (Flue temperature > 120 ˚C)
Faulty pump (absence of water
Er 14 + RESET flow in the main circuit) or primary
temperature above 105 ˚C
None or too low water flow; Faulty
Er 15 + RESET pump (temp. difference between
probes higher than 35˚ C)
Possible exchange of NTC probes
Er 16 + RESET (Flow or Return) or pump wrongly
mounted (upside --- down)
Er 17 + RESET
Faulty c.h. temperature probe
NTC (Flow or Return)
Er 18 + RESET
Faulty primary circuit (no water or
absence of flow)
L3
Useful output limitation (temperature difference between probes
higher than 25˚ C) : Boiler test
performing
Td
Thermostat Delayed : Boiler test
performing
An 11
Parasite flame
9