Model reference

Mmt MMT12CDBWLCAM8

Name: Mmt MMT12CDBWLCAM8
Brand: Mmt

Air Conditioner

3 documents4 error codes3 service modes

Available documentation

SERVICE MANUAL Wall Mounted Type ON/OFF N-Series42 pg
Covers this model
SERVICE MANUAL - Wall Mounted Type ON/OFF N-Series42 pg
Covers this model
Instructivo Aire Acondicionado Tipo Mini-Split / Owner's Manual Mini-Split Type Air Conditioner100 pg
Covers this model

MyPros+ Max

$29/month · Cancel anytime · Or $9.95 3-day pass

M+

M+ Max·Mmt Air Conditioner

E1 on my Mmt MMT12CDBWLCAM8

M+

Room temperature sensor failure —

From Service Manual 809116, p.48:

1.Access service mode to confirm the active fault code and read stored error history.

2.Disconnect the sensor and measure resistance. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens. A reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

CodeMeaning

Auto recovery function toggleIn auto, heating, cooling, or defrosting status, press the 'sleeping' button 10 times within 5…
Emergency operationPress the emergency operation switch once
Test run modePress and hold the emergency operation switch for 5 seconds

Full entry steps, exit procedures, and test sequences are available in Max.

78,000+ service manuals · 160,000+ error codes · 55+ brands

$29/month · Cancel anytime · Or $9.95 3-day pass