Innovator AW3-PJT, Manual

Page: 178 / 208

If Failure Condition is detected during compressor is operating, immediately stop Compressor operating
and stand by 5 minutes. During this 5 minutes, RPM command signal is not available. It means, even if
available RPM command signal is applied to the compressor, it does not work and keep standing by.
5 -1 6 . LED blink ing fre que ncy de pe nding on prot e c t ing func t ions
5 . Se lf Dia gnosis & Trouble Shoot ing
Blinking time is 1 second and dwell time is 2 seconds.
LED blinking frequency depending on protecting functions
To do list
LED Blinking Frequency Protecting Functions Remarks
Normal Operation N/A
Starting Failure
1. Short between COMP U,V, and W phase(CN301)
2. Short among IPM Pins(No, #1~33)
3. Drop the IPM operating Voltage under DC 13.5V
4. Other cases, cjeck the COMP, cycle, etc.
SPM Fault
Abnormal Current
Detection
1. Open the COMP wire(CN301)
2. Bad condition of R 308(ex. Bad soldering)
3. Other cases, cjeck the COMP, cycle, etc.
Motor Locked / Over
RPM
1. Operating the locked rotor COMP with in 5 second.
2. Operating the COMP under 1000RPM more than 5secod.
3. Short the shunt resistor between leads.
4. Occur the huge change of input voltage in a moment
5. Other cases, check the COMP, cycle,etc.
Under Voltage
1. Drop the input voltage under AC 53V
2. Short resistor R513(DC link resistor)
Over Voltage
1. Increase the input voltage over AC 154V
2. Short resistor among R501, R505 and R509 (DC link resistor)
https://appliancetechmanuals.com