Potterton · Assure Combi
E133 boiler fault code
Assure Combi 25/30/36
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What E133 means
Interruption of gas supply or ignition failure
Gas Safe engineer: If E133 returns, stop and contact a Gas Safe registered engineer.
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Safe check
Check that gas is on at other gas appliances, such as a hob, and check prepayment credit where applicable. Press Reset once only. If E133 returns, stop and contact a Gas Safe registered engineer.
When to contact an engineer
If E133 returns, stop and contact a Gas Safe registered engineer.
Source and provenance
- Baxi Professional error-code table · Potterton Assure Combi & System (Other tab) · E133 row
professional error-code table
Official Baxi web table; revision not stated
- Potterton Assure Combi User Guide 7678847-A (22/05/2017) · Tab.9, p.21
user guide
22/05/2017 · document 7678847-A
- Potterton Assure Combi User Guide 7678847-A (22/05/2017) · Tab.10, p.22
user guide
22/05/2017 · document 7678847-A
Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
Did this fix it?
After: Reset the boiler once