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Heat Pump & Control Support

What can I do if I run out of Hot Water?

All of Unitherms heatpumps have electrical booster operations. This can be used to compliment the heatpump at periods of high domestic hot water consumption for faster reaction times. Please view instructional video below to activate booster mode. If you have no hot water for over 24hours please view fault codes section further down this page.

Why are my rooms not getting up to temperature?

Unitherm supply heating systems that are zone controlled by wall thermostats. The thermostat will display the current room temperature for that particular zone. It is important to set the thermostat at a desirable temperature for that zone. The SEAI recommend 21 degrees for living areas and 18 degrees for sleeping areas but it is important to chooses whatever temperature is comfortable.

How do I check what temperature the thermostat is set to?

Scroll for Slimline & Therma & Neo & Sigma video

Another reason for rooms not getting up to temperature can be down to a simple adjustment of the heating circuit flow temperature on the heatpump controller. Upon commissioning, the heatpump is set to the most efficient temperature suitable for the building design to the keep energy consumption to a minimum but with colder outdoor temperatures this may need to be adjusted. A simple indication as to when this will need to be done is if your room thermostats have a constant call for heating (Flame symbol or heat waves)

If my heatpump is displaying an error / fault code what should I do?

Please select model below for common fault codes.

If the fault code is not listed above for my particular model is there anything else I can do before calling my installer?

Yes, your heatpump comes with an emergency mode for certain faults. This is a temporary measure to provide moderate hot water and heating until your plumber / installer arrives.

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Daikin Logo

Daikin Altherma 2 - Emergency Mode

Daikin Altherma 2 - Boost Hot Water

Daikin Altherma 2 - Increasing Flow Temperatures

Daikin Altherma 2 - 7H Fault

Daikin Altherma 3 - Emergency Mode

Daikin Altherma 3 - Boost Hot Water

Daikin Altherma 3 - Offset (increase) Flow Temperature

Daikin Altherma 3 - 7H Fault

Hitachi Logo

Hitachi Yutaki S - Emergency Mode

Hitachi Yutaki S - Boost Hot Water

Hitachi Yutaki S - 002 Fault

Hitachi Yutaki S - 017 Fault

Hitachi Yutaki S - 018 Fault

Hitachi Yutaki S - 040 Fault

Hitachi Yutaki S - 061 Fault

If the above video doesn’t solve your issue, please check the fan blade condition on the outdoor unit.

Hitachi Yutaki S - 070 Fault

Hitachi Yutaki S - 083 Fault

Hitachi Yutaki S - 205 Fault

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LG Therma V - Boost Hot Water

LG Therma V - CH 14 Fault

LG Therma V - Increase Flow Temperature

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Sigma Thermostat - Check Set Point Temperature & Remove Frost Symbol

Sigma Thermostat - E2 Fault

Sigma Thermostat - Change from Programmable to Set Point Mode

Sigma Thermostat- Set to Factory Default

Heatmiser Neo Thermostat - Change from Programmable to Set Point Mode

Heatmiser Neo Thermostat - Check Set Point Temperature

Heatmiser Slimline Thermostat - Change from Programmable to Set Point Mode

Heatmiser Slimline Thermostat - Check Set Point Temperature