IDEAL HP290 - Page 108

Section 9 - Fault Finding
108 Installation and Maintenance
FAULT FINDING
Does Line 15 (P1 comp. pressure) = Line 16 (P2 comp.
pressure) when viewed on the User Interface, Unit
Status, Operation Parameters
(refer to 5.8.6 on page 64)?
Is the Outdoor Unit covered in snow and ice?
Is the Air to Refrigerant heat exchanger blocked or dirty?
    󰀩       
clearance around the outdoor unit?
Does the fan operate correctly?
During operation is there a vibration from the body of
the electronic expansion valve with a click as it turns ON
to OFF.
Is the wiring assembly to the electronic expansion valve
connected installed?
Replace the Outdoor PCB. f the fault continues, replace
the Low Pressure Sensor.
Remove the Snow and /or Ice.
Remove snow/ice.
Remove blockage and/or
clean heat exchanger.
󰀩
clearance around the outdoor unit?
Replace the Fan Motor. If the fault
continues, replace the Inverter PCB.
Recharge the refrigerant.
Make sure that the wiring assembly to
the electronic expansion is correctly
connected installed.
NO
YES
YES
NO
NO
NO
NO
YES
NO
YES
YES
YES
YES
YES
9.1.31 Condensing Temperature High Error