These will fit Potterton Suprima Boiler.models 30 to 80 fitted with the
Please Note! The model 100 needs a different loom due the the fan wiring.
EARLY VERSION PCBS 407750 OR 5102160.
These will not fit the LATER VERSION SIEMENS PCB (in grey box).
If you are getting intermittent faults a break in the cables can cause this may need replacement.
90% of lock out problems are due to the failure of the PCB, the other 10% can be due to breakdown of the cables or connectors.
Simple procedure to replace - takes less than 15 minutes, and could save you ££s and a lot of frustration.
Please see our other items for all types of EXCHANGE Suprima boiler PCBs.