What to do if Toshiba MMD-UP0721HFP doesn't respond to the remote?
If your Toshiba Air Conditioner isn't responding to the remote, it may be operated under an external or another remote controller. Check the remote controller to ensure it is functioning properly.
Why won't the Toshiba Air Conditioner indoor fan start?
The indoor fan might not start if the air conditioner is using the cool air discharge prevention function in 'heating' mode. Check the settings and ensure the proper operation mode is selected.
Why won't the Toshiba Air Conditioner compressor start?
The compressor might not start due to several reasons: the air conditioner could be under a 3-minute protective function—wait 3 minutes and check again. It may be in standby because the room temperature is at the set temperature—change the settings to resume operation. Alternatively, it could be in timer or fan mode—switch to cooling or heating. Also, it might be in initial communication, so allow it time to establish communication.
Why does my Toshiba MMD-UP0721HFP outdoor fan not start or change speed?
The outdoor fan might not start or change speed if the air conditioner is in 'cooling' mode with a low outside air temperature—change to a more suitable mode. It could also be in defrost operation, in which case, allow the air conditioner to complete the defrost cycle.
How to stop Toshiba Air Conditioner indoor fan from running continuously?
The indoor fan might continue running because the air conditioner is performing residual heat elimination after heating. Wait for the process to complete.
General| Brand | Toshiba |
|---|---|
| Model | MMD-UP0721HFP Series |
| Category | Air Conditioner |
| Language | English |
Explains safety indications (DANGER, WARNING, CAUTION) and required protective measures.
Details refrigerant, fan speed, static pressure, communication, and control valve features.
Explains system combination rules and compatibility with SMMS series units.
Specifies allowed combinations of indoor units with outdoor units based on capacity.
Explains the function of key components in the indoor unit's refrigerant cycle.
Details control specifications for the indoor unit, including power reset and mode selection.
Outlines communication systems, model names, and group control capabilities.
Illustrates the block diagram of the indoor unit's control circuit.
Describes procedures for performing test runs using wired remote controllers.
Provides step-by-step instructions for setting indoor unit function codes.
Describes control system setup using the remote ON/OFF control box.
Explains how to operate the ventilating fan using a wired remote controller.
Explains how to configure the auto-off feature using Code (DN) settings.
Explains Code (DN) setup and Notice code configuration for signal detection.
Step-by-step guide for manually setting indoor unit addresses via remote controller.
How to check indoor unit addresses and their positions using the remote controller.
Method to identify indoor unit numbers within a group using the remote controller.
Procedure to clear check codes for outdoor units using the remote controller's service mode.
Procedure to clear check codes for indoor units using the remote controller's ON/OFF button.
Provides an overview of troubleshooting, including applicable models, tools, and normal behaviors.
Summarizes check codes detected by indoor units, their typical causes, and troubleshooting steps.
How to check for current troubles displayed on the remote controller.
Procedure to access and review past trouble history stored in the remote controller.
Provides resistance values for TA, TC1, TC2, and TCJ sensors at different temperatures.
Instructions for removing and reinstalling the electric parts box cover.
Step-by-step guide for replacing the indoor control board.
General procedures for replacing indoor unit P.C. boards, including data backup.
Diagram showing the exploded view of the indoor unit components.
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