Mitsubishi HMA100V User Manual

15
Dealing with comfort disruption
Dealing with comfort disruption
Use the following list to find and remedy any heating or hot
water problems.
Symptom Cause Action
Low hot water temperature or a lack of hot
water
Circuit or main MCB tripped. Check and replace blown fuses.
Heat pump and immersion heater do not heat. Check and replace any blown circuit and
main fuses.
Possible earth circuit-breaker tripped. Reset the earth circuit-breaker, if the earth
circuit-breaker trips repeatedly, call an
electrician.
Switch (SF1) set to mode 0. Set the switch to 1.
Large hot water demand. Wait a few hours and check if the hot water
temperature rises.
Too low start temperature setting on the
control system.
Adjust the start temperature setting in menu
1.2.
Low room temperature. Possible earth circuit-breaker tripped. Reset the earth circuit-breaker, if the earth
circuit-breaker trips repeatedly, call an
electrician.
Heat pump and immersion heater do not heat. Check and replace any blown circuit and
main fuses.
Incorrect setting of “Heating curve, offset”
and/or “Cooling curve, offset”.
Adjust the settings.
Check menu 2.1.1, 2.1.2 for heating system 1
3.1, 3.2 for heating system 2
2.1.1, 2.2.2 for cooling system
Stop temp heating setting is too low. Adjust the setting. Check menu 8.2.3
Circuit or main MCB tripped. Check and replace blown fuses.
Heat pump in incorrect operating mode “Hot
water” or “Cooling”.
Change operating mode to “Auto” or “ Au-
toC”.
The current limiter has restricted the current
because many power consumers are being
used in the property.
Switch off one/several of the power consu-
mers.
High room temperature. Incorrect setting of “Heating curve, offset”
and/or “Cooling curve, offset”.
Adjust the settings.
Check menu 2.1.1, 2.1.2 for heating system 1
3.1, 3.2 for heating system 2
2.1.1, 2.2.2 for cooling system
Heat pump in incorrect operating mode.
Change operating mode to “AutoC”.
Start temp cooling setting is too high. Adjust the setting. Check menu 8.2.4.
Heat load is too high. Remove the excess heat load.
The compressor does not start. Minimum time between compressor starts
alternatively time after power switch on not
being achieved.
Wait 30 minutes and check if the compressor
starts.
Alarm tripped. See section “Alarms”.
Alarm cannot be reset. Activate operating mode “Add. heat only”.
Panel gone out. Check and replace any blown circuit andmain
fuses.
Check that the circuit breaker to the indoor
unit is not off.
Set switch (SF1) to standby “ ”.

Mitsubishi HMA100V Specifications

General

Brand	Mitsubishi
Model	HMA100V
Category	Heat Pump
Language	English