BoilerFaultCodes 0 00
False flame
Vokera Eclipse ESS Fault codes & diagnostics
45 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Gas Discontinued
GC Number 41-094-10
Download the Vokera Eclipse ESS manual
PDF
Versions & GC numbers
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →
Severity at a glance
Each cell = one fault code. Hover to identify. 45 Unrated
Which version do you have?
The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.
| GC number | Appliance (register name) | Produced |
|---|---|---|
| 41-094-10 | Eclipse ESS | 1996–2010 |
Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.
Just want the most common Vokera Eclipse ESS faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes
All 45 documented codes
Tap any card for details
1 01
24V short circuit
4 03
Internal fault (PCB)
4 04
Lockout then power off
4 05
Internal fault (PCB)
4 06
Internal fault (PCB)
4 07
Internal fault (PCB)
4 08
Internal fault (PCB)
4 09
Internal fault (PCB)
4 10
Internal fault (PCB)
Showing 11–20 of 45
4 11
Internal fault (PCB)
4 12
Internal fault (PCB)
4 13
Internal fault (PCB)
4 14
Internal fault (PCB)
4 15
Internal fault (PCB)
4 16
Internal fault (PCB)
4 17
Internal fault (PCB)
4 24
Flow/return sensors reversed
4 26
Internal fault (PCB)
4 30
Difference between flow & return temperature too high
Showing 21–30 of 45
4 31
Short circuit on flow sensor
4 32
Short circuit on return sensor
4 33
Internal fault (PCB)
4 38
Internal fault (PCB)
4 41
Internal fault (PCB)
4 42
Internal fault (PCB)
4 44
Internal fault (PCB)
4 60
Internal fault (PCB)
5 28
No signal from fan
5 29
No signal from fan
Showing 31–40 of 45
5 61
Internal fault (PCB)
5 65
Insufficient fan speed
9 12
Condense trap blocked
9 19
Return temperature too high
9 25
Rapid temperature rise
202
Gas turned off, Air in gas pipe, Insufficient gas
436
Flow sensor cable disconnected
437
Return sensor cable disconnected
918
Pump seized, Flow/return service valve closed
E 18
Flow sensor above 95° C
Showing 41–45 of 45
E 19
Return sensor above 95° C
E 24
Temperature differential inverted
E 25
Rapid temperature rise
E 30
Flow sensor 35° C higher than return sensor
E 65
Insufficient fan speed after 1 minute