Nortek GFU18USV4DH, Installation Instructions & Owner'S Manual

Page: 29 / 36

DC Inverter U-match Series Floor Ceiling Type Unit
26
22 HC PFC protection
23 Lc Activation failure
24 Ld Compressor phase sequence protection
25 LE Compressor stalling protection
26 LF Power protection
27 Lp Indoor and outdoor mismatch
28 U7 4-way valve direction changing protection
29 P0 Drive reset protection
30 P5 Over-current protection
31 P6 Communication error between main control and drive
32 P7 Drive module sensor error
33 P8 Drive module over temperature protection
34 P9 Zero passage protection
35 PA AC current protection
36 Pc Drive current error
37 Pd Sensor connecting protection
38 PE Temperature drift protection
39 PL Bus low voltage protection
40 PH Bus high voltage protection
41 PU Charge loop error
42 PP Input voltage abnormality
43 ee Drive memory chip error
NOTICE! When the unit is connected with the wired controller, the error code
will be simultaneously shown on it.
(2). Error Indicating Lights on the Panel of the Floor Ceiling Type Unit.
.
Fig. 6.1