Midea M2OC-14HRDN1, Technical & Service Manual

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ODMI-1103-A
VOLT_RST1_ADD=210V, VOLT_LIM1_ADD=200V, VOLT_RST2_ADD=195V, VOLT_LIM2_ADD=185V.
VOLT_LIM_FREQ1_ADD=54Hz, VOLT_LIM_FREQ2_ADD=42Hz.
7.5.4 Compressor current limit protection
If the compressor current exceeds the current limit value for 10 seconds, the compressor frequency will be
limited as below table.
For models except M5OA-36HRDN1-Q.
Cooling mode:
Current frequency(Hz) Current limit value(A) Frequency limit
COOL_F10 ICOOLLMT6 Decrease the frequecny to COOL_F4 and
run at COOL_F4 for 3 minutes.
After that,the frequency will be adjusted
according to the capacity demand and rise
to the upper level every 3 minutes
(When the frequency>COOL_F4 via
capacity demand).
COOL_F9 ICOOLLMT5
COOL_F8 ICOOLLMT4
COOL_F7 ICOOLLMT3
COOL_F6 ICOOLLMT2
COOL_F5 ICOOLLMT1
If the current frequency is lower than COOL_F4, the frequency will not be limited.
After 10s of the compressor start, if the current>ICOOL,the AC will display the failure for 30 seconds
and stop. The AC will restart 3 minutes later.
Heating mode:
Current frequency(Hz) Current limit value(A) Frequency limit
HEAT_F12 IHEATLMT8 Decrease the frequecny to HEAT_F4 and
run at HEAT_F4 for 3 minutes.
After that,the frequency will be adjusted
according to the capacity demand and rise
to the upper level every 3 minutes
(When the frequency>Heat_F4 via capacity
demand).
HEAT_F11 IHEATLMT7
HEAT_F10 IHEATLMT6
HEAT_F9 IHEATLMT5
HEAT_F8 IHEATLMT4
HEAT_F7 IHEATLMT3
HEAT_F6 IHEATLMT2
HEAT_F5 IHEATLMT1
If the current frequency is lower than HEAT_F4, the frequency will not be limited.
After 10s of the compressor start, if the current>IHEAT,the AC will display the failure for 30 seconds
and stop. The AC will restart 3 minutes later.
For M5OA-36HRDN1-Q model:
Cooling mode:
Current frequency
（
Hz
）
Current limit value
（
A
）
Frequency limit
COOL_F16 ICOOLLMT12 Decrease the frequecny to COOL_F4 and run at
COOL_F4 for 3 minutes.
After that,the frequency will be adjusted according to
the capacity demand and rise to the upper level every
3 minutes
(When the frequency>COOL_F4 via capacity
demand).
COOL_F15 ICOOLLMT11
COOL_F14 ICOOLLMT10
COOL_F13 ICOOLLMT9
COOL_F12 ICOOLLMT8
COOL_F11 ICOOLLMT7
COOL_F10 ICOOLLMT6