Thermor Appliance Repair in St David's

What does error code W.28 mean on a Thermor heat pump water heater?

Error W.28 indicates the automatic defrost cycle is not functioning correctly. Check that airflow to the unit is not obstructed and the room temperature is within operating limits. If the error persists, contact a qualified engineer to inspect the defrost system.

What does error code W.25 mean on a Thermor heat pump water heater?

Error W.25 indicates a power supply or compressor operation fault. Check that the room is adequately ventilated and nothing is obstructing airflow. Switch off the water heater for 15 minutes, then restart. If the error persists, contact a qualified heating engineer.

What does error code 3 or W.23 mean on a Thermor electric water heater?

Error 3, W.3 or W.23 indicates a water temperature control fault related to a temperature sensor anomaly. This stops heating to prevent abnormal temperature rises. Restart by cutting power for 30 seconds. If the error persists, a qualified engineer needs to inspect the temperature sensor.

What does error code W.51.4 mean on a Thermor Aeromax Split heat pump water heater?

Error W.51.4 indicates a current/intensity sensor fault on the outdoor unit. This affects the system's ability to monitor electrical current properly. Contact a qualified engineer to verify and potentially replace the outdoor unit control board.

What does error code Err02 mean on a Thermor towel rail?

Error Err02 on Thermor towel rails indicates the digital control or thermostat has overheated. Allow the towel rail to cool down completely before restarting. Ensure towels are not covering the control panel or blocking ventilation.

What is Thermor's ACI Hybrid anti-corrosion protection?

ACI Hybrid (Anti-Corrosion Integrated) is Thermor's patented system combining an indestructible titanium anode with magnesium particles. An electronic control board produces a low-intensity electrical current that uses naturally present minerals to protect the tank's enamelled walls from corrosion.

What temperature should I set my Thermor heat pump water heater to?

The recommended setting range for nominal water temperature is 50-55°C. The heat pump operates efficiently within an ambient air temperature range of -15°C to 37°C.

How much energy can I save with a heat pump water heater compared to a traditional electric model?

A heat pump water heater can reduce your hot water energy costs by up to 75% compared to a traditional electric water heater. The electricity consumption is approximately three times lower because the heat pump extracts energy from ambient air rather than generating heat directly from electricity.

Why is my Thermor heat pump water heater not producing enough hot water?

Common causes include incorrect operating mode settings, dirty air filters reducing efficiency, cold ambient temperatures outside the operating range, or high hot water demand exceeding the unit's recovery capacity. Check your settings and ensure the filter is clean.

What should I do with my heat pump water heater during an extended absence?

For absences of less than two months, close the water inlet valve at the safety group. For absences longer than two months, close the water inlet, drain the tank completely, and ideally allow it to dry out. This prevents stagnant water issues and protects the system during extended periods without use.