Spot Check - Omega OTEC IEWB Series Service Manual

Frequency limitation because of evaporator temperature
Frequency limitation because of condenser temperature
Frequency limitation because of discharge temperature
Frequency limitation because of high IPM temperature

2.4 Spot check

⚫ Method 1: After powering on 5s, long press the button in indoor unit PCB for 5s, to enter spot
check. And then short press this button to read more parameters.
⚫ Method 2: After powering on, press "up & down swing" and "left & right swing" button alternately
5 times within 10 seconds to enter spot check. Press "up & down swing" and "left & right swing"
button to read more parameters.
⚫ Spot check table:
7
Primary / secondary over-current protection
High discharge temperature protection
High condenser temperature protection
IPM module fault
IDU anti-frosting protection
High IPM temperature protection
Outdoor unit fan motor stall protection
High evaporator temperature protection
DC bus low voltage protection
DC bus high voltage protection
MCE fault / sync / compressor start fault
Zero speed protection
Phase sequence error protection
Compressor stall fault
Frequency limitation because of voltage
Frequency limitation because of current
P3
P4
P5
P6
P7
P8
P9
P11
L1
L2
L4
L5
L7
L8
LA
LB
LC
LD
LE
LF