Pioneer YN018GMFI16M2D Service Manual page 25

8.4.4Number of indoor unit
8.4.5 Opening degree of electronic expansion valve:
Actual opening degree equals the display data divided 8
8.5 Protection
8.5.1 Three minutes delay at restart for compressor.
8.5.2 Temperature protection of compressor discharge.
When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules:
----If 102 <T5<115 , decrease the frequency to the lower level every 2 minutes till to F1.
---If T5>115 for 10 seconds, the compressor will stop and restart till T5<90 .
8.5.3 Low voltage protection
For M3OC-27HRDN1-M(220057100510)、M4OC-36HRFN1-M (220057100530) model:
Note: if the low voltage protection occurs and not resumes within 3min, it will keep the protection always
after restart the machine.
8.5.4 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.
Display Number of indoor unit
1 1
2 2
3 3
4 4
VOLTAGE
No limit
VOLLIMT1
VOLFRE1
VOLLIMT2
VOLLIMT3
VOLTAGE
VOLT_RST1_ADD
VOLT_LTM1_ADD
VOLT_RST2_ADD
VOLT_LTM2_ADD
VOLREL1
VOLREL2
VOLFRE2
VOLREL3
Off
No limit
VOLT_LTM_FREQ1_ADD
VOLT_LTM_FREQ2_ADD