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iMASS IWH-1.5 Instantaneous Water Heater User Manual — questions & answers

Read product questions and troubleshooting answers linked to iMASS IWH-1.5 Instantaneous Water Heater User Manual.

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Why is my iMASS IWH-1.5 water heater not reaching the set temperature, and who can a UK specialist contact for support?

2026-07-29 1 answer

If your iMASS IWH-1.5 is failing to reach the set temperature (e.g., reaching only 37°C when set to 45°C), consider the following troubleshooting steps…

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Why is the temperature control screen on my iMASS IWH-1.5 water heater not turning on even though it has power?

2026-04-30 1 answer

If your iMASS IWH-1.5 temperature control screen (remote control) does not light up even though the unit is powered, please follow these troubleshooting steps…

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