AGA Error Code 140
Configuration key fault — what this fault code means on AGA TEK / Tekelek PCB fault codes, and how we fix it.
- Fault code
- AGA TEK / Tekelek PCB fault codes
- Configuration
- Codes 140–140
Meaning
What code 140 means
Configuration key fault
Reported per: All
Coverage
Which models show it
- eR7 100
- eR7 150
- ATC3-*
- AGA ERA
Causes
Components that usually cause this code
We test each suspect part in the factory order before replacing anything.
The fix
How it is fixed
No configuration key fitted to the board, or the wrong key for the phase of electrical supply the cooker is connected to. With controls in standby it is possible to display the configuration key against the connected phase supply. See TB 30.01.14.
Safety & DIY disclaimer
Guides on this site are for information only. Appliance repair involves 240V electricity, gas connections, refrigerant and heavy cast-iron parts — anything you do yourself is at your own risk and can damage the appliance or cause injury. The safe option is to book a qualified technician.
Symptoms
Problems linked to this code
AGA TEK / Tekelek PCB fault codes
More codes on this platform
- 002 — Com WD Fault (communication watchdog)
- 003 — Com WD Fault (communication watchdog)
- 004 — Not used
- 005 — Not used
- 006 — WD WDT Fault (watchdog timer)
- 007 — TC Ref Fault — the user panel PCB is unable to process thermocouple measurements
- 010-014 — Full power time out — the cooking zone is taking too long to reach its expected temperature. This is a safety feature, not necessarily a component failure.
- 020-024 — Thermocouple differential — the two thermocouples in a zone disagree
- 060-100 — Thermocouple open circuit
- 110-116 — Relay short circuit
- 120-124 — Cooking zone overheat error
- 130-136 — Triac fault
- 139 — User panel overheat — excessive temperatures recorded at the control panel
- 150-156 — Relay open circuit
- 159 — RF fault — receiver not communicating with the PCB
Frequently asked questions
What does AGA error code 140 mean?
Configuration key fault
Can I keep using my AGA with code 140?
A power cycle at the breaker (60 seconds) may clear a one-off code. If the code returns, stop using the affected zone or appliance and book service — continuing to run can turn a small fault into a board-level repair.
AGA showing code 140?
We read AGA fault logs with factory-level tools — no guesswork. Diagnostic fee applies toward your repair.
Mon–Sun 8:00AM–8:00PM
Independent service company — not affiliated with or authorized by AGA / AGA Rangemaster (Middleby). We repair out-of-warranty AGA appliances.