Nortek GKU18USV4DH, Installation Instructions & Owner'S Manual

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DC Inverter U-match Series Cassette Type Unit
33
5 Installation of Controllers
Refer to the Installation Manual of the controller for more details.
6 Testing
6.1 Trial Operation and Testing
(1). The meaning of error codes as shown below:
Table 6.1
Number Error code Error Remarks
1 E1 Compressor high pressure protection
2 E2 Indoor anti-freeze protection
3 E3
Compressor low pressure protection, refrigerant
lack protection and refrigerant colleting mode
4 E4 Compressor high discharge temperature protection
5 E6 Communication error
6 E8 Indoor fan motor error
7 E9 Full water protection
8 F0 Indoor ambient temperature sensor error
9 F1 Evaporator temperature sensor error
10 F2 Condenser temperature sensor error
11 F3 Outdoor ambient temperature sensor error
12 F4 Discharge temperature sensor error
13 F5 Temperature sensor error of wired controller
14 C5 Capacity code error
15 EE Outdoor memory chip error
16 PF Electric box sensor error
17 H3 Compressor overload protection
18 H4 Overloading
19 H5 IPM protection
20 H6 DC fan motor error
21 H7 Drive desynchronizing protection
22 HC PFC protection
23 Lc Activation failure