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Troubleshooting
00 shows on the remote controller
00 shows when the MIM control box is first powered up it means the MIM PCB has activated but no
outdoor unit can be seen. Check the F1 F2 wiring is ok between the outdoor and indoor unit and
check the outdoor unit has power.
01 shows on the remote controller
01 means that the remote controller has power and it can see the outdoor unit too, this is good, in a
few seconds this will disappear.
E911 low flow alarm
If your flow rate is good (see above) but you see an E911 low flow alarm you need to test your flow
switch.
Remove paddle switch from the water, unplug the flow switch from the PCB. Get a multi meter and
switch it to ohms Ω setting. Insert the meter probes into the flow switch plug (See picture). It should
display infinity ∞ or OL. Wiggle the paddle your meter will beep or go to 0 Ohms.
This shows the paddle switch is ok. Now put it back in the water but leave the meter connected. With
the pump off you should see infinity ∞ or OL
Press right and left button together for 6 seconds. The controller will display TEST or 7E57, press the
power on/off button to start the pump. When the pump is running you can see a picture of a house
with a circle round it.
Your meter should beep or show 0 ohms with the pump running, if it doesn't the water is moving too
slowly. Make it move faster.
Cold Weather Protection, my unit won't start
The Samsung unit has a number of cold weather protection functions these include:
The heat pump cannot operate if the water in the system is less than 10°C, if the unit detects the heat
exchanger is less than 10°C it does two things:
Press the blue view button you can see 4 sensor readings, press it until the pump symbol shows (a
circle around a house). This is the water temperature, if it's below 10°C the unit will not start but the
pump will run.
If you are commissioning the unit from cold
You must warm up the water to get the unit to run, the easiest way to do this is to add a cylinder and
use the immersion to warm up the cylinder first, the warm water from the cylinder will preheat the
heat pump and it will start to operate.
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