Common problems guide

The most common Atag E32S problems

The faults most likely to send a Atag E32S into lockout — with plain-English causes, what to check first, estimated repair costs and whether you need a Gas Safe engineer.

This model is discontinued. Parts can be harder to source and expensive. If repair costs are mounting, a new A-rated boiler may be the smarter choice.
19 documented codes
6 most common
2 DIY-safe checks
4 engineer needed

The 6 most common faults

01
FILL High DIY-safe

Your boiler has stopped working because the water pressure inside the system is too low to run safely.

What to try first

Locate the external filling loop, usually a small silver braided hose with one or two valves located underneath the boiler.Gradually open the valve(s) to let water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Close the valve(s) tightly to stop the flow of water.

Parts
Filling loop, Pressure sensor, Pressure relief valve
Full guide for FILL
02
HIGH High DIY-safe

Your boiler has detected that the water pressure in your heating system is too high, which could cause a leak or damage if not addressed.

What to try first

Locate a radiator in your home, preferably upstairs.Place a cloth and a container under the radiator bleed valve.Use a radiator key to slightly open the valve and let a small amount of water out until the pressure gauge on the boiler drops to between 1 and 1.5 bar.

Parts
Pressure relief valve, Pressure sensor
Full guide for HIGH
03
Block 60 High Engineer

Your boiler has lost its specific 'tuning' settings which control how much power it should use, preventing it from starting up correctly.

Est. cost
£120-250
Parts
Control Board (PCB), Internal configuration memory
Full guide for Block 60
04
Block 80 High Engineer

Your boiler has switched itself off because the waste gases exiting the flue are dangerously hot, indicating your system is struggling to vent heat properly.

Est. cost
£150-350
Parts
Flue gas sensor, Primary heat exchanger, Pump
Full guide for Block 80
05
Block 81 High Engineer

Your boiler has stopped working because a sensor that monitors the exhaust gases has become disconnected.

Est. cost
£120-200
Parts
Flue gas sensor, Wiring harness
Full guide for Block 81
06
Block 82 High Engineer

Your boiler has detected a faulty sensor that monitors exhaust fumes, so it has purposefully shut down for safety reasons until the part can be replaced by a qualified engineer.

Est. cost
£150-250
Parts
Flue gas temperature sensor
Full guide for Block 82
Parts most often replaced

on the Atag E32S

Filling loopPressure sensorPressure relief valveControl Board (PCB)Internal configuration memoryFlue gas sensor

Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.

Call a Gas Safe engineer if…

  • You can smell gas or see signs of a leak
  • The Atag shows an Emergency or High severity code
  • The boiler keeps locking out after repeated resets
  • You've tried the DIY checks and the fault hasn't cleared
  • There's visible water leaking from the boiler
  • The flame is yellow or orange instead of blue
See the full 19-code list for the Atag E32S

Related guides

Boiler losing pressure → No hot water → When to replace → Symptom checker →