Midea DLFSAB Series User Manual

DLFSAB and DLFLAB: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
17
DIAGNOSIS AND SOLUTION (CONT.)
EL01 - Indoor and Outdoor Unit Communication Error Diagnosis and Solution
Description: Indoor unit can not communicate with the outdoor unit.
Recommended parts to prepare:
• Signal wires
• Magnet ring
• Indoor PCB
• Outdoor PCB
Troubleshooting and Repair:
XYE Communication:
Power o, then restart the unit
2 minutes later.
Use a shield cable grounding.
No
Yes
.
Correct the connection .
No
Yes
Yes
Replace the signal wire.
Yes
Pull out and re-insert.No
Replace the outdoor main PCB.
Check whether the signal wire is
shield cable or whether the
shield cable is ground.
Check whether the wire has the correct
polarity; P to P, Q to Q, or E to E.
Check whether the signal wire is broken.
Check whether the signal wires
are inserted on the PCB rmly.
Check whether there is any interference.
Are there too many lamps, power transformers?
Is the signal wire too long?
Yes
No
No
Replace the indoor main PCB.
Is the error resolved?
Yes
No
Remove the interference or
add a magnet ring on the power wire.

Midea DLFSAB Series Specifications

General

Brand	Midea
Model	DLFSAB Series
Category	Air Handlers
Language	English