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Daikin RKH25CVMB9 - User Manual

Daikin RKH25CVMB9
246 pages
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Ser vice
Manual
Inverter Pair
Wall Mounted Type C-Series
D-Series
[Applied Models]
zInverter Pair : Cooling Only
zInverter Pair : Heat Pump
SiENBE04-401A

Table of Contents

Other manuals for Daikin RKH25CVMB9

Questions and Answers

  • A
    Anthony CarpenterAug 12, 2025
    Why is my Daikin RKH25CVMB9 outdoor unit leaking water?
    • J
      Jessica TaylorAug 13, 2025
      In HEAT mode, the frost on the outdoor unit melts into water or steam during defrost operation. In COOL or DRY mode, moisture in the air condenses into water on the cool surface of the outdoor unit piping and drips.
  • J
    Joshua JohnsonAug 16, 2025
    Why does my Daikin RKH25CVMB9 Air Conditioner smell?
    • G
      greenjoshuaAug 16, 2025
      The Daikin Air Conditioner may emit odors because smells from the room, furniture, or cigarettes have been absorbed into the unit and are being discharged with the airflow. It is recommended to have the indoor unit cleaned by a technician. Consult the service shop where you bought the air conditioner.
  • B
    benjaminpeckAug 20, 2025
    What to do if my Daikin Air Conditioner heating stops suddenly?
    • N
      nancydixonAug 20, 2025
      The system is likely removing frost from the outdoor unit. You should wait for about 3 to 8 minutes.
  • F
    ftrujilloAug 25, 2025
    Why doesn't hot air come out immediately from my Daikin RKH25CVMB9 when heating?
    • E
      Elizabeth ParkerAug 25, 2025
      You should wait for 1 to 4 minutes. The system is designed to start discharging air only after it has reached a certain temperature.
  • E
    Eric KlineAug 27, 2025
    Why my Daikin Air Conditioner does not start immediately?
    • B
      Barbara FreemanAug 27, 2025
      If the ON/OFF button was pressed soon after operation was stopped, or if the mode was reselected, you should wait for about 3 minutes.
  • L
    Luis StricklandAug 31, 2025
    What to do if my Daikin RKH25CVMB9 Air Conditioner operation stopped suddenly?
    • C
      Cody GloverAug 31, 2025
      For system protection, the air conditioner may stop operating due to a sudden large voltage fluctuation. It will automatically resume operation in about 3 minutes.
  • D
    David LoganSep 4, 2025
    Why is the Daikin Air Conditioner outdoor fan running when it's off?
    • J
      John HahnSep 4, 2025
      After operation is stopped, the outdoor fan may continue rotating for another 60 seconds for system protection. Also, when the outdoor temperature is very high, the outdoor fan might start rotating for system protection even when the air conditioner is not in operation.
  • J
    jensenjulieSep 8, 2025
    Why does mist come out of my Daikin RKH25CVMB9?
    • G
      glassbrandonSep 8, 2025
      This happens when the air in the room is cooled into mist by the cold air flow during cooling operation.

Summary

Introduction

Safety Cautions

General safety warnings, pictograms, and precautions for handling the equipment.

Part 1 List of Functions

List of Functions

Details functions and features for high-grade models.

Standard Grade Models

Details functions and features for standard-grade models.

Non-Inverter Models

Details functions and features for non-inverter models.

Part 2 Specifications

Specifications

Technical specifications for cooling-only air conditioner models.

Heat Pump

Technical specifications for heat pump air conditioner models.

Part 3 Printed Circuit Board Connector Wiring Diagram

Part 4 Function and Control

Main Functions

Explains the inverter's frequency control for compressor operation.

Frequency Control

Details compressor frequency determination and control logic.

Freeze-up Protection Control

Details the freeze-up protection during cooling operation.

Defrost Control

Explains the defrost control procedure for heat pump models.

Electronic Expansion Valve Control

Details the control logic for the electronic expansion valve.

Malfunctions

Covers sensor malfunction and overload/overcurrent detection.

Part 5 System Configuration

Instruction

Essential safety warnings and cautions for installation and operation.

Troubleshooting

Lists common non-trouble cases and handling.

Part 6 Service Diagnosis

Caution for Diagnosis

Warnings and guidelines for safe diagnostic procedures.

Problem Symptoms and Measures

Lists common symptoms and initial troubleshooting steps.

Troubleshooting

Lists system error codes and their meanings.

Freeze-up Protection Control or High Pressure Control

Troubleshooting for freeze-up or high-pressure conditions.

Signal Transmission Error between Indoor and Outdoor Unit

Guides on troubleshooting communication errors between units.

OL Activation Compressor Overload

Explains troubleshooting for compressor overload.

Compressor Lock

Details troubleshooting steps for compressor lock issues.

High Pressure Control in Cooling

Guides on troubleshooting high pressure in cooling mode.

Electrical Box Temperature Rise

Details troubleshooting for electrical box temperature rise.

Insufficient Gas

Details troubleshooting steps for insufficient gas conditions.

Over-voltage Detection

Explains troubleshooting for over-voltage detection.

Part 7 Removal Procedure

Removal of Compressor

Details the procedure for removing the compressor.

Part 9 Appendix

Daikin RKH25CVMB9 Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
RefrigerantR32
Power Supply220-240V, 50Hz
Indoor Unit Dimensions (WxHxD)770x285x223 mm
Indoor Unit Weight8.5 kg

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