Below are some common fault codes for Mitsubishi Ecodan and Daikin Altherma air to water heat pumps. If you need help interpreting the error code or fixing.

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NO Replace the low pressure sensor.

‎Daikin Service dans l’App Store

I wish to apprentice whhilst you amend your web site, hhow could i subscribe for a weblog web site? Be sure to install the packing and seal on the installation frame properly. If you do not push the RESET button, the unit cannot be run for up eaikin 10 minutes to automatically set master power.

NO Does the pump run? Activated during heating opposite concerning indoor unit. Once the field setting is set, the chosen permission level is not yet active. Malfunction Decision Conditions When the high pressure sensor is alrherma circuit or open circuit. Malfunction Decision Conditions Make judgment according to communication data on whether or not the type of the inverter PCB is correct.

If no button is pressed, the remote controller leaves the display mode after 10 seconds. Is the measured voltage VDC or more? NO Resistance is normal when measured with the thermistor R3T for suction pipe1 disconnected from the outdoor unit PC board. See the operation manual attached to the refrigerant recovery unit for more detail. Check the installation conditions. The respective expansion valve of indoor and outdoor units are fully opened.


Ta Used to detect outdoor temperature, correct discharge pipe temperature, and others.

After that, properly connect the power supply cable, and then turn ON the power supply. W U C- Not less than 0. NO Can be checked see A6 error Make sure that: Push the w button for 5 seconds.

E S1PH High pressure switch In order to prevent the increase of high pressure when a malfunction occurs, this switch is activated at high pressure of 3. Malfunction of Cose Pressure Sensor Since this refrigerant is a mixed refrigerant, adding it in gas form may cause the refrigerant composition to change, preventing normal operation.

Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant R,RC can not be used for products that use new refrigerants.

These symptoms lapse of five minutes. If the F1U has blown out, replace the inverter PC board assy. Whether you need detailed product information have questions about your system our dedicated homeowner support line here to.

Now, the domestic water will be heated till maximum reheat temperature setting [b]. INV max upper limit frequency: YES Cooling Low pressure is 0. Si cest une altherma.

NO Can the fan alfherma turned smoothly with hand after disconnect the connector althegma fan motor? Refrigerant shortage, compression defect, etc. Aug troubleshooting daikin inverter pcb pt1. Connect the Service Tool. After the vacuum drying is finished, open valve A 5 and charge the additional refrigerant in its liquid state through the service port on the liquid stop valve taking into account following instructions: Do not install the equipment in a place where there is a possibility of combustible gas leaks.


NO The suction pipe1 temp. Since HFCs do not contain chlorine, new tester detects hydrogen. For integral units only If the packing and seal are not installed properly, water can enter the room and wet the furniture and floor. Performance Almost the eefaut performance as R and RC 2.

Daikin Altherma HT Service manual |

Be sure to turn off the power switch before connecting or disconnecting connector, otherwise parts may be damaged. At that moment, simultaneous request is finished and the system goes back to space heating mode. If lower orange light does defautt light up, purge the air out of the system. Check if system has low ESP.

Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.

Mitsubishi Ecodan & Daikin Altherma Fault Codes / Error Codes

The pump is making noise cavitation. When activated, the protector has to be reset on althermx heater of the heater kit by pressing the white button for access, remove the cover of the kit.

Design pressure high pressure side bar 38 38 38 Type Casc.