The printed circuit board or Pcb as it is commonly known is the boilers central control. It constantly checks every process that occurs via the sensors, switches and thermostats. It also enforces the safety protocols, making sure that the boiler ceases to function if any of the internal readings point to any kind of error or fault. The printed circuit board is essentially the brains of the appliance, ensuring everything is running correctly and safely. this is located behind the user control section of the boiler. It runs and monitors the entire boiler ensuring it monitors all the temperatures, airflow pressures, water pressures, water flow within the boiler and controls the gas supply to the burners. This is achieved by receiving information from these safety devices within the boiler such as thermisters, temperature sensors, air pressure switches, transducers, pressure switches, gas valves and many more. If any of the safety devices detect excessive readings or fail to work the information is sent back to the printed circuit board which in turn switches off the boiler to ensure safety to life and property. The printed circuit board regulates all the gas pressures sent to the burner it also runs the fan and monitors its condition, it runs the pump and monitors the flow of water that the pump is creating and also ensures the boiler runs safely and efficiently all the time. There are a number of different types of printed circuit boards and these are categorised as Main or Primary, Ignition, Display and Interface.

Main P.C.B Control 5112178

Part: 5112178

Price: £239.97
Potterton Control Box 245005

Part: 245005

Price: £153.97
Ravenheat 0012CIR06025/0 PCB

Part: 0012CIR06025/0

Price: £176.86
Glowworm 2000801923 CXI HXI Option Pcb

Part: 2000801923

Price: £33.39
Keston 177031 Heat Only Main Pcb

Part: 177031

Price: £155.54
Potterton Kingfisher Pcb 900312

Part: 900312

Price: £149.67
Ideal 174389 Control Module Imax Xtra F240

Part: 174389

Price: £377.21
Ariston 60001059-01 Printed Circuit Board

Part: 60001059-01

Price: £40.22
Baxi 7690353 Duo-Tec 40HE Main PCB

Part: 7690353

Price: £145.90
Main Relay Pcb 247401

Part: 247401

Price: £32.47
Potterton Performa 24 Eco He Pcb 5112657

Part: 5112657

Price: £111.38
Main 248075 Combi 24 Pcb

Part: 248075

Price: £148.05
Saunier Duval S1040000 Pcb

Part: S1040000

Price: £179.30
Main P.C.B 5106789

Part: 5106789

Price: £230.59
Potterton Pcb 5120220

Part: 5120220

Price: £121.37
Saunier Duval PCB 2000801991

Part: 2000801991

Price: £202.31
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