VOKERA Linea Service Manual download pdf (Page 32)

Linea

If so proceed to next stage. If not, see 7.7.4.

Connect test leads between the Neutral & Earth

connections at the appliance terminal strip.

(fig.16) the meter should read approximately 0 –

15Vac. If so polarity is correct. If not, see 7.7.4.

7.7.4 REVERSED POLARITY OR SUPPLY FAULT

Repeat the above tests at the appliance isolator,

if testing reveals correct polarity and/or supply at

the isolator, re-check wiring and connections be-

tween the isolator and the appliance.

If tests on the isolator also reveal reversed polar-

ity or a supply fault, consult the local electricity

supplier for advice.

7.7.5 RESISTANCE TO EARTH CHECK

Isolate the appliance from the electrical supply,

and using a suitable multi-meter carry out a re-

sistance test. Connect test leads between the

Live & Earth connections at the appliance termi-

nal strip. (fig.16) If the meter reads other than

infinity there is a fault that must be isolated, carry

out a detailed continuity check to identify the lo-

cation of the fault.

IMPORTANT

These series of checks must be carried out be-

fore attempting any faultfinding procedures on the

appliance. On completion of any task that re-

quired the disconnection and re-connection of any

electrical wiring or component, these checks must

be repeated.

7.8 FAULT FINDING

Before attempting any faultfinding, the electrical

checks as detailed in 7.7 must be carried out.

Isolate the appliance from the electrical supply.

Disconnect any external controls from terminals

TA & Spare of the appliance terminal strip, and

make safe. Insert a solid link-wire between ter-

minals TA & TA.

Ensure jumper tags are fitted to the main PCB

at:

●●

● JP6

●●

● JP7

●●

● JP8 (Nat. Gas only).

●●

● M7

NOTE

If the Vokera remote-control (RC05) is connected

to the appliance, it should be disconnected dur-

ing any faultfinding checks.

Restore the electrical supply to the boiler and turn

the selector switch to the on position. The boiler

should now function as described in section 7.2.

Should the boiler fail to respond, the internal fuses

and connectors should be checked to ensure in-

tegrity and continuity. If the boiler still fails to re-

spond, refer to the detailed faultfinding flowcharts

overleaf.

7.9 FAULT CODES

When the boiler displays a fault code, the appro-

priate code is shown on the display, accompa-

nied by a flashing red LED. To reset the boiler,

slowly turn the mode selector switch to the reset

position then back to the on position.

If the boiler does not reset, refer to the following

section and the detailed faultfinding flowcharts

overleaf.

FAULT CODE 01

Fault code 01 appears when the burner has failed to ignite,

or the flame supervision system has failed to detect a flame.

●●

● Check incoming gas supply

●●

● Check spark electrode

●●

● Check polarity

●●

● Check integrity of flue system

●●

● Check gas valve

●●

●

Check ignition control PCB

FAULT CODE 02

Fault code 02 appears if the boiler has overheated.

●●

●

Check high limit thermostat

●●

●

Check thermistors

●●

●

Check pump

●●

●

Check gas pressures

FAULT CODE 03

Fault code 03 appears if the boiler or flue system has devel-

oped a fault.

●●

●

Check operation of fan

●●

●

Check flue venturi

●●

●

Check analogue pressure switch

●●

●

Check flue system

FAULT CODE 04

Fault code 04 appears if the pressure in the boiler is low.

●●

●

Check water pressure

●●

●

Check water pressure switch

●●

●

Check water pressure gauge

FAULT CODE 05

Fault code 05 appears if the appliance is connected to the

optional remote control (RC05) and there is a communication

problem.

●●

●

Check wiring between RC05 and appliance

FAULT CODE 06

Fault code 06 appears if a problem exists with the secondary

(DHW) thermistor.

●●

●

Check thermistor

●●

●

Check wiring continuity

FAULT CODE 07

Fault code 07 appears if a problem exists with the primary

thermistor.

●●

●

Check thermistor

●●

●

Check wiring continuity

FAULT CODE 08

Fault code 08 appears if the burner thermostat has been

activated.

●●

●

Check gas pressures

●●

●

Check burner thermostat

●●

●

Check wiring continuity

FAULT CODE 09

PCB fault

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