Model reference

Mmt MMT12HABWCAM8

Name: Mmt MMT12HABWCAM8
Brand: Mmt

Air Conditioner

2 documents4 error codes3 service modes

Available documentation

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

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M+ Max·Mmt Air Conditioner

E1 on my Mmt MMT12HABWCAM8

M+

Room temperature sensor failure -

From Service Manual 512378, p.30:

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 toggle["Unit must be in auto, heating, cooling, or defrosting status.","Press the 'sleeping' button 10…
Emergency operation["Press the emergency operation switch once.","Buzzer rings once and unit enters automatic…
Test run mode["Press and hold the emergency operation switch for 5 seconds.","Buzzer rings two times and unit…

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

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