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Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 420
Experience:  20 yrs. experience with a major worldwide manufacturer.
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I have a British Gas Worcester Bosch 532 I Combi boiler

Customer Question

I have a British Gas Worcester Bosch 532 I Combi boiler which the dnumerical display alternating flashing from 39 to a symbol with twin vertical lines and each have a horizontal line. I removed a radiator today and found no hot water, refilled the boiler up to 1 bar and the water is now showing some heat but tepid
JA: How old is your Bosch boiler? What water pressure does the gauge show?
Customer: 1.1 bar
JA: How long has this been going on with your Bosch boiler? What have you tried so far?
Customer: Today, reset button
JA: Anything else we should know to help you best?
Customer: No
Submitted: 6 months ago.
Category: Appliance
Expert:  Tim Cooke replied 6 months ago.

Hello, the display is showing the CH flow temperature alternating with that symbol, which means that the "Syphon-fill programme" is active.

Have you fully filled and vented the system?