# AGA main PCB (TEK/Tekelek) failure

> AGA main PCB (TEK/Tekelek) failure: symptoms, likely causes and how a technician diagnoses it. Occasional AGA issue. Mon–Sun 8:00AM–8:00PM. Call or text 206-427-7323.

Occasional issue — here is how we diagnose it, which parts are usually involved, and when to call a pro.

**Occasional** · Professional repair only

## What you will notice

- Recurring relay or triac codes after component replacement
- Watchdog faults 002 / 006
- VE code — firmware too old
- Multiple zones behaving erratically

## What is usually behind it

- Relay short circuit (110–116) or open circuit (150–156) recurring (common)
- Triac fault (130–136) with a good element and correct firmware (common)
- Firmware below 6.1 with a newer user panel (VE) (occasional)

## How a technician diagnoses it

1. Rule out the element and thermocouple first — most triac codes are element faults, not board faults.
2. Check firmware version on the TEK Vision Firmware tab.
3. Always do a mains voltage and polarity check: the TEK PCB will not work with reversed polarity.
4. Replacement is a complete PCB tray: remove the magnetic plinth, remove two screws each side of the tray, pull the tray out, transfer all cables in the correct order and torque to spec.

## Parts usually needed

- [AGA main TEK / Tekelek PCB (complete tray)](https://aga.repair/aga-tek-pcb-replacement) (control)

## Related error codes

- [002 — Com WD Fault (communication watchdog)](https://aga.repair/aga-error-code-002)
- [006 — WD WDT Fault (watchdog timer)](https://aga.repair/aga-error-code-006)
- [110-116 — Relay short circuit](https://aga.repair/aga-error-code-110-116)
- [130-136 — Triac fault](https://aga.repair/aga-error-code-130-136)
- [150-156 — Relay open circuit](https://aga.repair/aga-error-code-150-156)

## Appliances affected

- [AGA Classic eR7](https://aga.repair/aga-classic-er7-repair)
- [AGA Classic 39" Total Control](https://aga.repair/aga-classic-total-control-repair)
- [AGA ERA](https://aga.repair/aga-era-repair)

> ⚠️ **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.

## Related AGA problems

- [AGA oven door rope seal worn — heat loss, poor cooking, hot fascia](https://aga.repair/aga-door-rope-seal)
- [AGA oven or hotplate element failed (no heat / reduced heat)](https://aga.repair/aga-element-open)
- [AGA full power time-out (codes 010–014) — zone too slow to reach temperature](https://aga.repair/aga-full-power-timeout)

## Frequently asked questions

### Can I fix this myself?

Professional repair only. This fault involves gas or 240V electrical components — diagnosis and repair should be done by a licensed technician.

### How much does it cost to fix this issue?

Every visit starts with diagnostics and a written estimate — the diagnostic fee applies toward your repair when you proceed. We never start work without your approval.

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## Book a repair

- Call or text: 206-427-7323 (Mon–Sun 8:00AM–8:00PM, Pacific Time)
- Book online: https://aga.repair/contact/
- Email: service@aga.repair
- Service at your home across the Seattle–Tacoma metro, WA. Diagnostic fee applies toward your repair.

Independent service company — not affiliated with or authorized by AGA / AGA Rangemaster (Middleby). We repair out-of-warranty AGA appliances.