Download
Share
Print this page
DELLA Motto JA Series Maintenance Manual
  1. Manuals
  2. Brands
  3. DELLA Manuals
  4. Air Conditioner
  5. Motto JA Series
  6. Maintenance manual
DELLA Motto JA Series Maintenance Manual

DELLA Motto JA Series Maintenance Manual

Inverter-driven air conditioning units
Hide thumbs Also See for Motto JA Series:

Advertisement

Quick Links

Download this manual

Advertisement

loading
Need help?

Need help?

Do you have a question about the Motto JA Series and is the answer not in the manual?

Questions and answers

Related Manuals for DELLA Motto JA Series

Summary of Contents for DELLA Motto JA Series

  • Page 2: Maintenance

    Maintenance Troubleshooting Guide Many error codes many appears on this air conditionor, and this troubleshooting guide is prepared for the maintenance personnel to detect the error position and the parts to be replaced during the troubleshooting process. In this Guide, the Troubleshooting Method is guided by the Error Name, and the Reference Code under the General Index is the error code of the Indoor Unit of the mainstream model supplied by the Company.
  • Page 3 Gas leakage? 2-way or 3-way valve Liquid Deficiency Protection blocked etc. Please check the troubleshooting Refrigeration Overload Protection for detail. Please check the troubleshooting Discharge Protection for detail. Please check the troubleshooting Indoor High Temperature Protection for detail. Anti-freezing Protection in Refrigeration Please check the troubleshooting Room for detail.
  • Page 4 Example: Cause: explain the principle of the specific error. Explanation Inspection path: The basic order of troubleshooting. Related key of error position Tools Tools that should be carried for such troubleshooting, and replacing parts required for that may be necessary for such error. inspection Common Any possibly broken part related to the error may be the parts that need to...
  • Page 5 （1） E0- Overcurrent Protection of Indoor Unit The main PCB detects that the working current of the system exceeds the upper limit of protection, and will indicate "indoor unit overcurrent protectin:. The air conditioner stopps running for protection and displays the failure code E0. Display E0 Is the supply voltage range Power off and power on...
  • Page 6 （2） E1- Indoor Unit temperature sensor error E3 -Indoor Unit coil sensor error The detection of short circuit or open circuit of Indoor Unit temperature sensor or Indoor Unit coil sensor during the inspection of main PCB in the Indoor Unit machine.
  • Page 7 （3）E2 -Outdoor Unit coil sensor error The detection of short circuit or open circuit of Outdoor Unit coil sensor during the inspection of Outdoor Unit main PCB. Start Display E2 Is the sensor well connected Re connect to ODU PCB ? Problem solved ? Multi-meter check the sensor resistance.
  • Page 8 （4）E4 -Indoor Unit motor error of wall mounted air conditioner（PG motor/DC motor） When the feedback signal of speed is not received by the Indoor Unit main PCB, it has no way to recognize the rotating speed of motor. Start Display E4 Turn the fan blades by hand while power-off condition...
  • Page 9 (5) E5(5E) -Indoor Unit and Outdoor Unit communication error Start Display E5 IDU and ODU wiring connection correct ? E5 disappear? Check and re-connect （Reference wiring diagram） Check communication, earth Replace/ re-connect E5 disappear? wiring and the connection, in good condition? Check voltage from IDU terminal btw L,N Check the power...
  • Page 10 (6) Eb –Indoor EE Failure which The motor on the Indoor Unit main PCB can only work after reading the data stored in EE and if not read, the failure code "indoor EE Failure" will be indicated and raised in the indoor unit. Display Eb Check IDU PCB internal Re-connect...
  • Page 11 (7) F0- Outdoor Unit DC motor error (3-core terminal motor) The main PCB will indicate “Outdoor Unit DC motor error” when it detects imbalanced current on the three lead wires of the driving motor. Shut off Check the fan blade by Re install the DC motor hand, can it rotate freely Works normal?
  • Page 12 (8) F1 -Module protection error The power module is the part to directly drive the compressor to work. It can protect the machine in time when overcurrent, overvoltage or overheat occurs and stops the compressor from working. Display F1 Restart unit. It works normal? Wiring connection Re-connect...
  • Page 13 (9) F2- PFC protection error PFC board is a component of the inverter air conditioner for power factor correction and voltage boosting. When the PFC board cannot perform power calibration as normal because of overcurrent and overvoltage, it will indicate “PFC protection error” and its function may also be integrated with the module panel or main PCB.
  • Page 14 (10) F4- Discharge sensor error F6- Outdoor Unit temperature sensor error The detection of short circuit or open circuit of Outdoor Unit termperature sensor or “discharge sensor error”during the inspection of Outdoor Unit main PCB. Start Display F4 or F6 Is the sensor well connected Re connect to ODU PCB ?
  • Page 15 (11) F5 -Compressor top head sensor error The compressor top head sensor is a compressor top head temperature protection switch most of the time. It keeps closed (short circuit) when the compressor temperature is normal and switches off (open circuit) when the temperature is too high. Start Display F5 Restart the system...
  • Page 16 （12）F7-OVP or UVP error When the supply voltage is lower than 135V or higher than 275V, the inspectio circuit would detect over or under voltage protection signal and send it to the Outdoor Unit main PCB and the Outdoor Unit main PCB would raise the alarm "OVP or UVP error" and indicate it through the Indoor Unit motor.
  • Page 17 13）F8-Outdoor Unit main PCB and module panel communication error （exclusive of Outdoor Unit machine of single panel） When the machine is running normally, the module panel and the Outdoor Unit main PCB would coordinate with each other on the communication to work and when the communication is off, the Outdoor Unit main PCB would raise the alarm of "main PCB and module panel communication error".
  • Page 18 （14）F9- outdoor EE error The motor on the Outdoor Unit main PCB can only work after reading the data stored in EE and if not read, the alarm "outdoor EE error" would be reported and raised in the Indoor Unit machine. Display F9 Check ODU PCB internal Re-connect...
  • Page 19 （15）FA- recirculated sensor error (only models of electronic expansion valves are involved) The recirculated sensors are only used on machine models of electronic expanssion valves and the back temperature value is considered as the basis for adjustment of the electronic expanssion valve and determination if the four-way valve changes the position normally during heating.When the main PCB detects open circuit or short circuit of the recirculated sensor, it would raise an alarm of "recirculated sensor error"...
  • Page 20 (16) P3 –Liquid Leakage Protection The liquid volume of the system is less than 30%, which leads to non-refrigeration and liquid shortage protection. Start Display P3 Check the pressure AC pressure correct? (cooling:0.8-1.3Mpa/ Check the sensor short or Heating: 2.0-3.6Mpa) open? Replace the sensor Check the valves open...
  • Page 21 (17) P4 –Refrigeration Overload Protection Outdoor coil sensor senses excessive temperature, prevents compressor from overloading, and reduces frequency. Display P4 Multi-meter check the sensor resistance. Replace sensor Open or short circuit? (about 20KΩ) Problem solved ? IDU filter or ODU Clean IDU filter or condenser too dirty? condenser...
  • Page 22 (18) P5–Discharge Protection Display P5 Is discharge temperature sensor Replace the discharge P4 disappear? resistance abnormal? pipe sensor (about 50KΩ) ODU temperature Normal protection higher than 60℃? Adjust ODU ODU location Enough space for Unit operate? acceptable? installation ventilation? Condenser too Clean IDU filter or P5 disappear? dirty? or filter...
  • Page 23 (19) P6–Indoor High Temperature Protection P7–Anti-freezing Protection in Refrigeration Room Display P6 or P7 Switch on unit after minutes Clean filter IDU filter dirty? Display P6 or P7 P6 or P7 disappear? Normal protection P6 or P7 disappear? IDU air inlet blocked? Clean Can fan blade Check and repair fan...
  • Page 24 (20) P8–Overcurrent Protection Controller detects AC bus current exceeding the set protection value, then limits and reduces the frequency. Display P8 Is the supply voltage range normal? Wait until the AC (220V btw187-253V/ voltage recovery 115V btw 75-132V) P8 disappear? IDU filter or ODU Clean IDU filter or condenser too...
  • Page 25 Class L Troubleshooting guide: Code Reason Remark DC Over/Under-voltage 1. ODU PCB broken? Failure 2.pls check as the guidence of Error cod“L*”. Overcurrent Protection on 1. ODU PCB broken? Phase Current of Compressor 2.pls check as the guidence of Error cod“L*” Out-of Step Failure of 1.
  • Page 26 Display L* Restart unit. It works normal? Wiring connection Re-connect U/V/W correct? Compressor terminal L* disappear? check the reactor wire is Can compressor Replace reactor well connected or start up? destroyed? Works normal? Test voltage btw U/V/W-G , (normally from DC 20~200V.) Replace ODU PCB Is the condenser...
  • Page 27 Note: If these tips appear when the air conditioner is used, it does not mean that the air conditioner is faulty, but only a reminder of the function operation. Code Code correspondence Mode cancellation mode H1 or H2 or H3 Special locking This mode can be released by pressing the remote or H4 or H5...
  • Page 28 9-2 Display error code of outdoor unit's indicator lights Display by the 3 LED indicator lights on the PCB of the outdoor unit: ○ for off; ● for on; ★ for flashing. Error Name Probable Trouble Location Normal (outdoor Normal, all three lights off for standby ○...
  • Page 29 sensor error Indoor Unit coil Indoor Unit coil sensor, Indoor Unit main ● ○ ★ sensor error PCB. Indoor motor Mechanical jam of motor, Indoor Unit ○ ● ★ error motor, Indoor Unit main PCB. Refer to tooling ○ ★ ○...

This manual is also suitable for:

Umbra jpb series