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Table 10. 3PC Single Zone Outdoor Unit Error
Display
Malfunction and Protection Indication
PC10
Outdoor unit low AC voltage protection.
Outdoor unit main control board DC bus high voltage
PC11
protection.
Outdoor unit main control board DC bus high voltage
PC12
protection / 341 Machine Check Error (MCE) error.
PC30
System high pressure protection
PC31
System low pressure protection
Communication error between outdoor main chip and
PC40
compressor driven chip
PC42
Compressor start failure of outdoor unit
PC43
Outdoor compressor lack phase protection
PC44
Outdoor unit zero speed protection
PC45
Outdoor unit IR chip drive failure
PC46
Compressor speed has been out of control
PC49
Compressor overcurrent failure
PCA1
Condensation protection of refrigerant pipe
PH90
High temperature protection of Evaporator
PH91
Low temperature protection of Evaporator
LC06
High temperature protection of Inverter module (IPM)
Test Run
Pre-Checks
Only perform test run after you have completed the
following steps:
•
Electrical Safety Checks – Confirm that the unit's elec-
trical system is safe and operating properly.
•
Refrigerant Leak Checks – Check all flare nut connec-
tions and confirm that the system is not leaking.
•
Confirm that suction and liquid valves are fully open.
Procedure
You should perform the Test Run for at least 30 minutes.
1. Connect power to the unit.
2. Press the ON/OFF button on the remote controller to
turn it on.
3. Press the mode button to scroll through the following
functions, one at a time:
Codes
•
COOL - Select lowest possible temperature.
•
HEAT - Select highest possible temperature.
4. Let each function run for 5 minutes, and perform the
following checks:
Table 11. Test Run Checklist
Checks
No electrical leakage
Unit is properly grounded
All electrical terminals
properly covered
Indoor and outdoor units are
solidly installed
All pipe connection points do
not leak
Water drains properly from
drain hose
All piping is properly
insulated
Unit performs COOL function
properly
Unit performs HEAT function
properly
Indoor unit louvers rotate
properly
Indoor unit responds to
remote controller
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.
1. Using remote control, return unit to the normal
operating temperature.
2. Using insulation tape, wrap the indoor refrigerant pipe
connections that you left uncovered during the indoor
unit installation process.
If Ambient Temperature is below 60°F (16°C)
You cannot use the remote controller to turn on the
COOL function when the ambient temperature is below
60°F (16°C). In this instance, you can use the MANUAL
CONTROL button to test the COOL function.
1. Lift the front panel of the indoor unit, and raise it until
it clicks in place.
2. The MANUAL CONTROL button is located on the
right-hand side of the unit. Press it 2 times to select
the COOL function.
3. Perform Test Run as normal.
20
Pass
Fail
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