E6
Drayton RF Module Hardware Fault

Thermostat shows E6 and cannot complete pairing or loses connection immediately after pairing.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed RF transceiver module, Damaged RF antenna track on PCB, ESD damage to RF circuitry, Manufacturing defect in RF section

How to Fix / Troubleshooting

Safety first: Turn off power to the thermostat and receiver before handling.

  • Rule out interference: Temporarily move the thermostat closer to the receiver (e.g. Wiser Heat Hub or Drayton RF receiver) and remove obvious sources of interference (Wi‑Fi routers, metal cabinets) between them.
  • Factory reset: Perform a factory reset on both thermostat and receiver following the Drayton manual, then attempt pairing again.
  • Check antenna damage: If accessible, inspect the thermostat PCB for a broken or cracked RF antenna track or damaged RF can. This usually requires removing the front cover and may void warranty.
  • Replace faulty unit: If E6 persists after reset and relocation, the RF module is likely defective. Replace the thermostat or receiver (whichever shows the error) with a new Drayton unit and reconfigure the system.
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Repair Difficulty

Medium 3/5

Required Part

RF Transceiver Module (within Thermostat or Receiver)
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