Hive Hot water control failure

Hive thermostat cannot control hot water even though heating works correctly

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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

Single-channel receiver installed on system requiring dual-channel, Hot water channel not wired, Faulty hot water relay, Cylinder thermostat or valve fault

How to Fix / Troubleshooting

Safety first: Hot water controls are mains-voltage. Isolate power before inspecting wiring.

  • Confirm receiver type: Check whether you have a single-channel or dual-channel Hive receiver. Systems with stored hot water usually need dual-channel.
  • Check app configuration: Ensure hot water control is enabled in the Hive app and linked to the correct receiver.
  • Test manual hot water button: Press the hot water button on the receiver. If the cylinder does not heat, the relay or wiring is suspect.
  • Inspect wiring (competent persons only): Verify that the hot water ON terminal is wired to the cylinder thermostat or motorised valve.
  • When to call a pro: Incorrect receiver type or wiring must be corrected by a heating engineer.
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Repair Difficulty

Hard 4/5

Required Part

Hive Dual-Channel Receiver
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