EvaKool DOWN UNDER Series, Service Manual

DOWN UNDER

 SERIES

16

4. Basic Fault Finding

Compressor running but not cooling:

 Probable cause - gas leak .

•  Check if there is any heat in the discharge line and condenser, if there is no heat present 

there is a likelihood that no gas is in the system .

•  Fit gauges to access port and check if there is any refrigerant in the system if there is no 

gas present .

•  Fill the system with nitrogen and bubble test all the joints in the engine bay, if nothing is 

detected in the engine bay STOP TESTING as the leak will be internal and not repairable . 

DO NOT spend any more time on the job . Re-seal pipe after removing access valve .

Important:

Do not exceed 100psi or 690Kpa pressure of nitrogen, doing so will destroy the 

rollbond evaporators which are not replaceable.

Compressor running but not achieving temperature:

 Probable cause - Fan has stopped 

or condenser is blocked with fluff .
•  Remove the back cover and check if fan has stopped or if the fan is still running .
•  Check the condenser to see if blocked . 

Display not showing the right temperature:

 Probable cause - Thermistor or Main PCB .

•  Test thermistor (see page 11) or replace with a new thermistor .
•  If the thermistor is OK then the main PCB may need recalibrating, see section SUB MENU 

(page 5) for changing display offset .

•  If the above doesn’t work, then a new PCB is required .

Note:

 The displayed temperature is only an indication of what the average temperature may 

be inside.

E1 Battery protection cut out OR low voltage failure:

 Probable cause - faulty 

component, bad wiring, wrong battery protection setting or flat/faulty battery .

Please Note:

 Most E1’s are a consumer error not a manufacturing fault and therefore 

not covered under warranty (if fault is not found). Refer customer to the manual for 

troubleshooting or to call EvaKool.

•  With the use of a multimeter start at the source, measure the voltage at the battery to 

determine if the battery is flat or not .

•  Make sure that the battery protection mode is set on LOW and check the cutout voltage 

in the table (page 5) .

•  Test with multimeter the various components in the cabinet e .g ., plug, circuit breaker 

etc .