How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Pete Your Own Question
Pete, Electronic Engineer
Category: Exercise Equipment
Satisfied Customers: 17403
Experience:  Over 16 years of experience installing and repairing electronics.
Type Your Exercise Equipment Question Here...
Pete is online now
A new question is answered every 9 seconds

My york t300 diamond treadmill is displaying an E04 error

Customer Question

My york t300 diamond treadmill is displaying an E04 error msg when I have tried to start it.
Submitted: 1 year ago.
Category: Exercise Equipment
Expert:  Pete replied 1 year ago.

Hello Dirk,

I am Pete, and I'll be happy to assist with your question today.

E04 indicates a relay error.

It could be caused by a loose wiring connection - test for continuity throughout your wiring harness and eliminate the possibility of a bad connection.

If that doesn't help, then open the cover and locate the motor control board (has a metal frame) with the treadmill plugged in and safety key on/in manually push the belt and see if there is a blinking light on the board. If there isn't check the speed sensor for proper alignment. It is usually located off the back of the motor or near the front roller pulley. if it is blinking do the following:
# ***** a 12-18 volt dc battery fully charged(like one from a cordless drill)
# ***** sure it is fully charged, because it won't work if not
# ***** the + and - to the motor red is + and black is -
# ***** the motor turns slowly your motor is ok, if not the motor is bad and would need replaced
# ***** the motor is ok then your motor controller(the board with the metal) is malfunctioning and would need replaced.

Let me know how you get on...


Expert:  Pete replied 1 year ago.

Hi, just checking in on your question, do you need any further assistance?