MULFUNCTIONS AND ADJUSTMENTS
Should the boiler shut down it must be reset by rotating functions selector switch to position A.
B: see TEST functions at "Gas pressure adjustments with Honeywell VK 4105 valve"
Legend:
Should the flue control trip, re-ignition will be disabled for 20 minutes. The timing can be reset to zero by
switching the power off and then back on via the function selector.
Constant light:
Ignition shutdown
Fast flashing light:
TST shutdown
On
G30/G31
JP1
LPG
JP2
Max. hot water adjustment 60°C
(post.circ. off)
JP3
heating
Heating timer off
JP4
Resistor jumper cut, floor heating temp. set to 30/40°C.
JP5
Resistor jumper uncut, temperature 35/80°C
cards only:
Present: bi-thermal function
JP6
4.56035.0
Absent (cut): mono-thermal function
4.56040.0
RLA
Slow ignition adjustment
Increase
R max.
Max. heating power adjustment
Increase
A
B
Constant light: No water
Fast flashing light: Sensor fault
Slowly flashing light:
Air pressure switch (MCS)
Flue Control (MC)
Off
G20
Natural Gas
Max. hot water adjustment 50°C
post.circ.
on 2,5 min.
heating timer on 2,5 min.
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