Error code88888
Watchdog alarm occurs due to CPU or servo amplifier faults, or if power is restored after disconnecting all cables except control circuit power supply. The manual's first action is: “Change servo amplifier.”
- Model
- Mitsubishi Electric MR-J2S-A
- Display shows
- Watchdog (88888)
- Type
- Error code
- Source
- Manual p. 69
What 88888 means
Watchdog p. 206
Common causes
- CPU, parts faulty p. 206
- Fault of parts in servo amplifier Checking method Alarm (88888) occurs if power is switched on after disconnection of all cables but the control circuit power supply cable. p. 206
What to do
- Change servo amplifier. p. 206
Before you service the product, read the safety instructions in the manual p. 3.
If 88888 is still not resolved
- contact service / dealer p. 3 “Do not attempt to install, operate, maintain or inspect the servo amplifier and servo motor until you have read through this Instruction Manual, Installation guide, Servo motor Instruction Manual and appended documents carefully and can use the equipment correctly.”
- contact service / dealer p. 4 “Do not attempt to wire the servo amplifier and servo motor until they have been installed. Otherwise, you may get an electric shock.”
This page summarises what the manufacturer’s manual says about 88888; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Mitsubishi Electric. Found a mistake? Report an error.