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.
13
TROUBLESHOOTING
Test the voltage between P and N on back of the outdoor unit main PCB with a multimeter. If the voltage is lower than 36V, the capacitors are fully
discharged.
Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, an error code appears (see Table 6).
Table 6 — Error Display (Indoor Unit)
For other errors: The display board may display a code or a code undefined by the service manual. Ensure the code is not a temperature reading.
Table 7 — Error Display on Two Way Communication Wired Controller
The other error codes displayed on the wire controller are the same from those on the unit.
DISPLAY ERROR INFORMATION SOLUTION
EH00 Indoor unit EEPROM parameter error Page 16
EL01 Indoor / outdoor unit communication error Page 17
EL16 Communication malfunction between adapter board and outdoor main board Page 32
EH03 The indoor fan speed is operating outside of the normal range (for some models) Page 22
EH60 Indoor room temperature sensor T1 is in open circuit or has short circuited Page 22
EH61 Evaporator coil temperature sensor T2 is in open circuit or has short circuited Page 22
EH62 Evaporator coil temperature sensor T2B is in open circuit or has short circuited Page 22
EH65 Evaporator coil temperature sensor T2A is in open circuit or has short circuited Page 22
ELOC Refrigerant Leakage Detection (for some models) Page 23
EH06 Communication error between indoor two chips --
EH0E Water-level alarm malfunction Page 24
EC07 The outdoor fan speed is operating outside of the normal range (for some models) Page 20
EC51 Outdoor unit EEPROM parameter error --
EC52 Condenser coil temperature sensor T3 is in open circuit or has short circuited Page 22
EC53 Outdoor room temperature sensor T4 is in open circuit or has short circuited Page 22
EC54 Compressor discharge temperature sensor TP is in open circuit or has short circuited Page 22
EC56 Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited (for free match indoor units) --
PC00 IPM malfunction or IGBT over-strong current protection Page 25
PC01 Over voltage or over low voltage protection Page 26
PC02 Top temperature protection of compressor or High temperature protection of IPM module Page 27
PC03 Low pressure protection (for some models) Page 28
PC04 Inverter compressor drive error Page 29
EC0d Outdoor unit malfunction Page 30
PC0L Low ambient temperature protection Page 30
FL09 Mismatch between the new and old platforms Page 32
DISPLAY MALFUNCTION OR PROTECTION SOLUTION
EH63 Communication error between wire controller and indoor unit ---
Turn off all power supplies or disconnect all wires to avoid electric
shock. While checking indoor/outdoor PCB, please equip oneself with
anti-static gloves or wrist strap to avoid damage to the board.
WA RNING
Electricity remains in capacitors even when the power supply is off.
Ensure the capacitors are fully discharged before troubleshooting.
WA RNING

Midea DLFSAB Series Specifications

General

Brand	Midea
Model	DLFSAB Series
Category	Air Handlers
Language	English