Owners Manual
Page 36
mrcool.com
Maintenance
Error Code
WARNING
• When abnormalities occur, stop the unit immediately and disconnect power. Contact MRCOOL
®
Tech Support, at (270) 366-0457. If the unit continues to run abnormally, it may damage the unit
and cause an electric shock and/or a fire hazard.
DO NOT attempt repairs to the appliance yourself. Improper repair and maintenance can
create electric shock and/or fire hazards. Please contact MRCOOL Tech Support, at the phone
number above, for further guidance or a qualified professional for repairs.
Number Error Code Error
1 E1 Compressor high pressure protection
2
E4 Compressor air discharge high-temperature protection
4 F2 Condenser temperature sensor error
5 F3 Outdoor ambient temperature sensor error
6 F4 Discharge temperature sensor error
7 F6 Outdoor unit tube temperature sensor error
8
9
EE Outdoor unit memory chip error
10
11
12
H4 Overload
13
H5 IPM protection
14
H6 DC fan error
15
H7 Driver out-of-step protection
16
HC Pfc protection
17
Lc Startup failure
18
19
20
21
P0 Drive reset protection
3
E3
Compressor low pressure protection
If the LED display panel on the main board of the outdoor unit displays an error code, please refer
to the following table:
P6
Master control and driver communication error
Driver module sensor error
P8 Driver module high temperature protection
P7
P5 Over-current protection
PA AC current protection
Pc Driver current error