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Glowworm Boiler Printed Circuit Board (PCB) 0020017357
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FROM £99.99
Glowworm Saunier Duval Boiler Printed Circuit Board PCB 0020017357
Product Overview
The Boiler Printed Circuit Board (Part Number: 0020017357) is an electronic control component associated with the Glowworm and Saunier Duval boiler spare-parts ranges.
Identified by suppliers as a Main PCB SYMSI.7 Type, the circuit board forms part of the boiler's electronic control system, processing signals from connected sensors, thermostats and switches to coordinate appliance operation.
The PCB supports essential functions such as ignition sequencing, burner control, temperature monitoring and the operation of electronic safety systems.
Correct PCB operation is important for maintaining reliable boiler functionality and the correct response to heating and hot water demand.
ℹ️ Product Condition Options:
This part may be available in New or Refurbished condition. Please select your desired option from the dropdown menu above. Refurbished PCBs should be professionally inspected and tested to confirm correct operation before installation.
Technical Insight & Common Failure Symptoms
The printed circuit board acts as an electronic controller, receiving information from connected boiler components and coordinating the appliance's operating sequences.
Electrical faults, damaged connections, moisture exposure or deterioration of electronic components may interfere with normal PCB operation.
Possible symptoms that may indicate a PCB or associated electrical control problem include:
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Boiler failing to start or operate correctly.
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Intermittent boiler operation.
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Boiler failing to respond to heating demand.
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Boiler failing to respond correctly to domestic hot water demand.
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Boiler failing to complete its normal ignition sequence.
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Unexpected boiler shutdowns or safety lockouts.
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Irregular operation of connected electrical components.
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Visible damage or deterioration affecting the circuit board.
These symptoms do not necessarily confirm a faulty PCB, as similar problems may result from wiring, sensors, ignition components or other boiler controls. Correct professional diagnosis should be carried out before replacing the board.
Safety Advice
Boiler printed circuit boards are safety-related electronic components. Inspection, removal and installation must only be carried out by a Gas Safe registered engineer who is suitably qualified for the appliance and work being undertaken.
Always isolate the appliance's electrical supply before carrying out any work and follow the manufacturer's installation and servicing instructions.
Ensure the correct PCB is installed and all electrical connections are securely fitted. Any required configuration and appropriate electrical safety, ignition, flame supervision and operational checks must be completed before returning the boiler to service.
This part fits the following boilers:
Fits Appliance(s)
GC No.
Saunier Duval ENVIROPLUS F24E
Saunier Duval ENVIROPLUS F28E
Saunier Duval ENVIROPLUS FSB28E
Delivery
Free next day UK delivery is available on orders over £50.
Orders placed before 3 PM are usually dispatched the same working day.
Delivery times may vary for remote areas, Highlands, islands, and non-mainland UK destinations.
If you need urgent delivery help, please contact our customer service team before placing your order.
All Orders First 30 Days:
You can return or cancel your orders for any reason at any time within 30 days of receipt. After 30 days, we reserve the right to charge a restocking fee or refuse the return.
Parts must be returned in the same condition and packaging as received, or we may deduct a percentage of the cost of the part.
A full refund or exchange will be agreed once the item(s) have been received and inspected to ensure they are unused and in their original packaging where applicable.
If the part is returned as faulty and is found to be working upon inspection, postage costs will be deducted from the refund.
Faulty Items After 30 Days:
All items come with a 1 year HTS warranty from the date of purchase. Warranty means HTS will repair or replace the item.
Refunds:
Our returns team will process your refund after we receive and check your items. Please allow up to 15 days for your refund to be processed.
The refund will be made to the original payment method used to place the order.
Contact Us:
For any queries, email us at returns@heatingtradesupplies.com or call +44 01912633708.
Customer Services
National Boiler Spares Ltd
Tyne View Terrace
Wallsend
Tyne and Wear
NE28 6SG
