Combi, Puma 21/18867 Puma PCB Permanent Pilot Modulation

Potterton 21/18867 Puma PCB Permanent Pilot Modulation

This part fits the following boilers:

• Potterton COMBI 100
• Potterton COMBI 80
• Potterton PUMA 100 (SIT/HONEYWELL)
• Potterton PUMA 80 (SIT/HONEYWELL)

The printed circuit board or PCB is the boilers central control.

It controls and monitors every process that occurs via the switches, thermostats and sensors.

It also enforces the safety measures, making sure that the boiler ceases to function if any of the internal readings point to any fault in the boilers processes.

The printed circuit board is effectively the brain of your boiler, it is programmed to ensure everything is running as it should.

Box is tatty from storage