Trade-ready part listing Verify SKU, product condition and appliance compatibility before ordering.
MAIN
SKU N6493-2-B

MAIN ECO COMPACT SYSTEM 15 18 & COMBI 25 30 BOILER PCB 7688421

Main Eco Compact System Combi Boiler Pcb 7688421 Product Overview The Main Eco Compact System Combi Boiler Pcb 7688421 is a critical component designed for specific Main heating systems. Th...
Availability Available to order
Product code N6493-2-B
Brand MAIN
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Product information

Technical details

Main Eco Compact System Combi Boiler Pcb 7688421

Product Overview

The Main Eco Compact System Combi Boiler Pcb 7688421 is a critical component designed for specific Main heating systems. This Printed Circuit Board (PCB) acts as the central intelligence of the boiler, orchestrating ignition, safety monitoring, and temperature regulation. properly functioning components are vital for the energy efficiency and safety of your boiler.

ℹ️ Product Condition Options:
This part may be available in New, Refurbished, or Compatible conditions. Please select your desired option from the dropdown menu above. All refurbished parts are professionally tested to ensure reliability.

Technical Insight & Common Failure Symptoms

Based on service data: Before any work is done on any boiler you should do this 4 Part test. Our yellow (easy to follow) FAULTS book and APP has this and a lots Main PCB fault. Switch to DHW mode maximum flow and press reset. During System fault . correct. NO. YES. Ensure that the boiler and system are fully vented.

Replacing this part often resolves the following issues:

  • Restores reliable system operation and eliminates fault codes.
  • Resolves specific failure symptoms such as intermittent lockouts, unresponsive controls, failure to ignite, or specific electronic fault codes (e.g., internal error)..
  • Ensures safety compliance and efficient boiler performance.

Compatibility

This part (MPN: 7688421) is designed for models within the Main range. Please strictly verify the part number against your boiler's technical manual before ordering to guarantee fitment.

Safety Advice: Boiler parts involve gas, water, and electricity. Installation must be carried out by a Gas Safe registered engineer.

This part fits the following boilers:

Fits Appliance(s)
GC No.
Baxi 624 Combi
47-077-28
Baxi 630 Combi
47-077-29
Baxi 636 Combi
47-077-30
Baxi 818 System
41-470-73
Baxi 824 System
41-470-74
Baxi 825 Combi
47-077-38
Baxi 830 Combi
47-077-39
Baxi 836 Combi
47-077-40
Main Eco Compact 15 System
41-467-30
Main Eco Compact 18 System
41-467-31
Main Eco Compact 25 Combi
47-467-14
Main Eco Compact 30 Combi
47-467-15
Potterton Combi 25
47-393-58
Potterton Combi 25 LPG
47-393-70
Potterton Combi 30
47-393-59
Potterton Combi 30 LPG
47-393-69
Potterton Combi 36
47-393-67
Potterton System 12
41-594-12
Potterton System 15
41-592-54
Potterton System 18
41-592-55
Potterton System 18 LPG
41-592-96
Potterton System 24
41-594-13
Potterton System 24 LPG
41-594-16