Omega OTEC IEMP-D Series, Technical Manual, Page: 89 / 95

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Water discharge is smooth.
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Open the check valves on the gas and liquid sides.
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Heat insulation is complete.
◼
Connect to the power supply to let the air conditioner warm up first.
◼
Grounding cables have been properly connected.
3. Install the remote controller mounting rack according to the user's requirements.
The location of the mounting rack must be such that the remote control signal can be successfully transmitted
to the indoor unit.
4. Test Run
Use wired/remote controller to control and operate the air conditioner in the cooling mode. Check the following
items according to the manual. If there is any fault, troubleshoot by referring to the section "Fault and
Troubleshooting" in the manual.
11. Trouble shooting
11.1 Fault information and codes
Medium Staitc Presure Duct:
1. Error code table(Indoor unit display)
IEMP009(12,18,24)J3A-DCG026(36,53,71)
Error code Error definition Error display
E0 IDU EPROM fault Immediate display, spot check
E1 ODU communication fault Immediate display, spot check
E3 IDU fan stall fault Immediate display, spot check
E5 ODU temperature sensor or EPROM fault Immediate display, spot check
E50 ODU temperature sensor fault Immediate display, spot check
E51 ODU EPROM fault Immediate display, spot check
E52 Outdoor coil T3 temperature sensor fault Immediate display, spot check
E53 Outdoor ambient T4 temperature sensor fault Immediate display, spot check
E54 Outdoor discharge temperature sensor fault Immediate display, spot check
E55 Outdoor air return temperature sensor fault Immediate display, spot check
E6 IDU temperature sensor fault Immediate display, spot check
E60
IDU room temperature T1 sensor fault
Immediate display, spot check
E61 IDU pipe temperature T2 sensor fault Immediate display, spot check
E7 ODU DC fan stall fault Immediate display, spot check
E71 Outdoor fan over-current (external driving) Immediate display, spot check
E72 Outdoor fan stall (external driving) Immediate display, spot check
E73 Outdoor fan phase loss (external driving) Immediate display, spot check
E74 Outdoor fan zero speed (external driving) Immediate display, spot check
EE Water level alarm error Immediate display, spot check
P0 ODU IPM protection Immediate display, spot check
P1 Voltage protection Immediate display, spot check
P10 Low voltage protection Immediate display, spot check
P11 High voltage protection Immediate display, spot check
P12 Outdoor DC-side voltage protection Immediate display, spot check
P2 Temperature protection for compressor top Immediate display, spot check
P4 ODU compressor feedback protection Immediate display, spot check
P40 Main control chip and driver chip communication fault Immediate display, spot check
P41 Compressor current sampling circuit fault Immediate display, spot check
P42 Compressor start-up fault Immediate display, spot check