Error Code
E3
–
Indoor Fan Problem
Indoor Unit or Wired Control Display
–
E3
Dr. Smart Display (Debugger)
–
E3
Malfunction decision conditions
When the indoor fan speed is too slow (300 RPM
or less) for 3 minutes or more, the unit stops and
the LED displays the Error Code for 30 seconds.
Then retries until locks out.
Supposed Causes
• Wiring mistake • Reactor faulty
• Fan motor faulty
• PCB faulty
Troubleshooting:
Error may only displayed every 3 minutes, during this time you may
see either “normal display” or “88” on indoor unit or wired control.
If after parts replacement, E3 is
still displayed, contact your local
CE Technical Support Rep.
Free up, replace any broken
parts so fan spins freely
Shut OFF the power supply.
Rotate the Indoor fan by hand.
Does the fan rotate freely?
No
Yes
Yes
No
Check fan motor connections,
some units also have fan driver
board, check these as well. Were
any connections loose or off?
Replace Motor, Main PCB &
Fan Inverter (Driver) PCB
Reseat/Reconnect fan wires,
retry system operation
Ohm out reactor, remove wires first. Reading
should be close to Zero between terminals. Also
check each connection to ground, this should be
open. If not replace.
40MBDQ09~58--3 Ducted
Indoor Fan Error
–
E3 (page 1 of 2)
Continued on next page
Dr. Smart
Display
Follow the “1st Steps for DLS Troubleshooting”
in the beginning of this guide, if you have an
active error, procedure below.
