VOKERA Vision 25C, User Instructions

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4.1 WHAT IF I SUSPECT A GAS LEAK
If you suspect a gas leak, turn off the gas supply at the gas
meter and contact your installer or local gas supplier. If you
require further advice please contact your nearest Vokèra office.
4.2 WHAT IF I HAVE FREQUENTLY TO TOP-UP
THE SYSTEM
If the system regularly requires topping-up, it may be indicative
of a leak. Please contact your installer and ask him to inspect
the system.
4.3 WHAT IF THE APPLIANCE IS DUE ITS AN-
NUAL SERVICE
Advice for tenants only
Your landlord should arrange for servicing.
FAULT CODES
4. WHAT IF...
Advice for homeowners
Please contact Vokèra Customer Service (0844 3910999 (UK)
or 056 7755057 (ROI) if you would prefer a Vokèra service
engineer or agent to service your appliance. Alternatively your
local GAS SAFE registered engineer may be able to service
the appliance for you.
4.4 - WHAT IF I NEED TO CALL AN ENGINEER
If you think your boiler may have developed a fault, please contact
your installer or Vokèra Customer Services
(0844 3910999 (UK)
or 056 7755057 (ROI) have all your details to hand including
full address and postcode, relevant contact numbers, and your
completed appliance log book.
ALARM CODE CAUSE ALARM TYPE ACTION
_St
AUTOSTOP Final Call engineer
_CL
CALL FOR SERVICE Temporary then
Final
Call engineer
A01
Ignition failure, flame not sensed,
internal fault
Final Reset, check appliance operation
A02
Limit thermostat fault Final Reset, check appliance operation
A03
Fan tacho signal fault Final Reset check appliance operation,
check fan
A04
Insufficient system water pressure Final Check/refill system pressure, reset,
check appliance operation
A06
DHW thermistor fault Temporary Check DHW thermistor
A07
Primary (flow) thermistor fault Temporary Check primary thermistor, check wiring
Primary (flow) thermistor over tempe -
rature
Temporary then
Final
Reset, check appliance operation
Temperature differential Final Reset, check appliance operation,
check thermistors
A08
Return thermistor fault Temporary Check return thermistor, check wiring
Return thermistor over temperature Temporary then
Final
Reset, check appliance operation
Temperature differential inverted Final Reset, check pump, ensure there is
sufficient circulation around heating
circuit/s
A09
Flue thermistor or flue thermistor
counter fault
Temporary Check flue thermistor counter at power
on, check flue thermistor, check wiring
Flue thermistor over temperature Final Reset, check appliance operation
A77
Low temperature thermostat fault Temporary Check low temperature thermostat
Adj
Calibration Na None
ACO
Service operation Na None



Purge cycle mode active Na None
P
Preheating function active Na None
P
blinking
Preheating function running Na None
Flame ON Na None
Hours Stand-by Na None
- - OFF Na None