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.
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 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.