Technical data

15.0 Fault Finding
43
Low
High
ON
Reset
Mains On
Light (Green)
Boiler On
Light (Green)
Lockout
Light (Red)
Off
Off
Off
Live & Neutral Reversed
Incoming Live and Neutral
reversed.
Go to Ignition Lockout section
of the fault finding instructions.
Go to Fan Lockout
section of the fault finding
instructions.
Go to Thermistor section
of the fault finding
instructions.
Low Electrical Supply
Incoming Voltage less than
180V. Check System Controls
& System Wiring. Otherwise
contact Electricity Provider.
LV Wiring Harness Ensure 8-
way PCB connector securely
pushed in. If fault persists
replace LV wiring harness.
PCB Fault
Replace PCB.
PCB Fault
Replace PCB.
PCB Fault
Replace PCB.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Go to Electrical Supply
section of the fault finding
instructions.
ON
Go to Dry-Fire
section of the fault finding
instructions.
Go to Overheat Lockout
section of the fault finding
instructions.
NOTE: The fan is supplied with 325 Vdc.
Fan Fault Finding should only be carried out after the
boiler has been electrically isolated.
General Fault Finding should only be carried out by
someone who is appropriately qualified.
Lights
On
Off
Flash
ON
Lights
On
Flash
Flash
ON
Lights
On
Off
On
ON
Lights
Flash
Off
On
ON
Lights
Flash
Flash
On
ON
Lights
On
Flash
On
ON
Lights
Flash
Off
Flash
ON
Lights
On
On
On
ON
Lights
Flash
On
Flash
ON
Lights
On
On
Flash
ON
Lights
Flash
On
On
ON
Lights