Medium
13 on Baxi Bahama 80e / 105e

Your boiler is struggling to detect or maintain the hot water flow, meaning you may have issues with getting hot water from your taps.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Domestic Hot Water Mode

Shared across the Bahama 80e / 105e range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
Search the official register →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like 13: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

10View →11View →12View →

All 20 fault codes on the Bahama 80e / 105e

Seeing a different code? Every code this model can display, in one place.

101112141523242526272829303132Air Flow MonitorFlame FailurePump Fault or Low PressureSafety Thermostat

Related guides you might find useful

No hot water but heating works

Almost always a stuck diverter valve on a combi.

Read →

Hot water works but heating does not

On a combi it is usually the diverter valve. On a system boiler, the motorised valve.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →