Mr-cool Mini Split Error Codes
15 codes · manual-verified where marked · draft entries clearly flagged
E-codes
- Mr-cool EC07 error code draft
EC 07 means outdoor fan speed stays too low or too high for the manual's detection time; the outdoor LED … - Mr-cool EC51 error code draft
EC 51 means the outdoor PCB main chip does not receive feedback from the outdoor EEPROM chip. The control is n… - Mr-cool EC52 error code draft
EC 52 means outdoor coil temperature sensor T3 sampling voltage is lower than 0.06V or higher than 4.94V. The … - Mr-cool EC53 error code draft
EC 53 means outdoor ambient temperature sensor T4 sampling voltage is lower than 0.06V or higher than 4.94V. T… - Mr-cool EC54 error code draft
EC 54 means compressor discharge temperature sensor TP sampling voltage is lower than 0.06V or higher than 4.9… - Mr-cool EC71 error code draft
EC 71 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "Over… - Mr-cool EC72 error code draft
EC 72 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "Lack…
H-codes
- Mr-cool H00 error code draft
H 00 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "The i… - Mr-cool H02 error code draft
H 02 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "The i… - Mr-cool H03 error code
H03 on MRCOOL mini splits is the indoor fan-speed fault (EH03 family): the blower speed stays too low or too h… - Mr-cool H60 error code draft
H 60 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "Indoo… - Mr-cool H61 error code draft
H 61 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "Indoo… - Mr-cool H90 error code draft
H 90 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "High … - Mr-cool H91 error code draft
H 91 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "Low t…
L-codes
- Mr-cool L01 error code draft
L 01 returns after one safe reset or the condition does not clear. Tell them the manual trigger is "The i…