Fault Finding - Potterton Promax SL range Installation & Service Instructions Manual

Reset
Lockout Boiler On
LED Light
LED Light
(Red) (Green)
Lights
Off Off Off
ON
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
54
© Baxi Heating UK Ltd 2014
High
Low
ON
Mains On
LED Light
(Green)
Go to Electrical Supply
YES
section of the fault finding
instructions.
Live & Neutral Reversed
YES
Incoming Live and Neutral
reversed.
Go to Dry-Fire
YES
section of the fault finding
instructions.
YES
Go to Ignition Lockout section
of the fault finding instructions.
Go to Overheat Lockout
YES
section of the fault finding
instructions.
Go to Fan Lockout
YES
section of the fault finding
instructions.
17.0

Fault Finding

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 Flash On
YES
ON
Lights
Flash Off Flash
YES
ON
Lights
On On On
YES
ON
Lights
Flash On Flash
YES
ON
Lights
On On Flash
YES
ON
Lights
Flash On On
YES
ON
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.