Mermaid REFRIGERATION/FREEZER Manuale Utente

connected 

retaining screw & then ensure that the 3-
pin plug is seated firmly on the pins of 
the compressor. 

9 

Faulty compressor 

Remove the Module as above, & unplug 
from the compressor. Check that ohm 
readings are the same across all 
terminals of the compressor. 

10  Heat sink overheated 

Allow components to cool down before 
attempting re-start. 

11  Compressor too cold 

If compressor is below freezing 
temperature, allow to warm up before 
attempting re-start. 

  

  

  

 

 1  Faulty or inadequate 

power supply 

Monitor the supply voltage at the 
terminals on the Module during start 
attempts to ensure that it does not fall 
below threshold levels. If it does, check 
power supply, ground connections & 
components for integrity. Check for 
correct wire sizing. Charge batteries if 
necessary. 

2  Faulty fan or pump relay 

or unauthorized 
component installed  

Remove connectors from F & + 
terminals on Module & attempt re-start. 
Maximum current draw on these 
terminals is limited to 0.7 amps 12v 

3  Quick Connect fittings not 

made 

Check that all refrigerant fittings are 
connected together properly. 

 

D: System Runs, Box Temperature Too High: 

 1  Thermostat setting 

Rotate thermostat knob clockwise to a 
higher number. 

2 Speed 

setting 

** Optional Part **  

Check that thermostat leads are 
connected to the speed setting 
recommended for the evaporator that is 
installed, & for its use i.e. refer or 
freezer.