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Post Installation Checks
Test Run Instructions
Preparation before connecting the power:
1. Power must not be connected if the installation work is not completed.
2. Control circuit is correct and all the wires are firmly connected.
3. Cut-off valves of the gas pipe and liquid pipe are open.
4. The inside of the unit should be clean. Remove irrelevant objects if there are any.
5. After checking, re-install the front side plate.
Operation after connecting the power:
1. If all the above works are finished, power on the unit.
2. If the outside temperature is more than 86°F(30°C), heating mode can’t be enabled.
3. Make sure the units can run normally.
4. If there are any loud and/or abnormal sounds contact MRCOOL®Tech Support immediately.
NOTICE:
If nothing is displayed on the thermostat, check the wiring.
DOUBLE-CHECK PIPE CONNECTIONS
During operation, the pressure of the refrigerant circuit will increase. This may reveal leaks that were not present
during your initial leak check. Take time during the Test Run to double-check that all refrigerant pipe connection
points do not have leaks.
Test Run
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