What to do if Hitachi YUTAKI S COMBI RWD-4.0NWE-200S Air Conditioner shows Failure of discharge gas pressure sensor?
If your Hitachi Air Conditioner displays a 'Failure of discharge gas pressure sensor', check the connectors for any looseness or breakage. The issue may be a loose, disconnected, broken, or short-circuited connector.
What to do if Hitachi Air Conditioner shows abnormal transmission between outdoor and indoor units?
If your Hitachi Air Conditioner shows 'Abnormal transmission between outdoor and indoor units', check the wiring, terminals, and PCB for faults. This issue can be caused by incorrect wiring, loose terminals, PCB failure, a tripped fuse, or the power supply being OFF.
Why does my Hitachi Air Conditioner activate safety device from excessively high discharge pressure?
If your Hitachi Air Conditioner activates the safety device due to excessively high discharge pressure, inspect the heat exchanger and refrigerant conditions. This activation can be caused by overload (obstruction of HEX, short circuit), a mixture of inert gas, or excessive refrigerant.
What causes Hitachi YUTAKI S COMBI RWD-4.0NWE-200S to activate safety device from excessively low suction pressure?
If your Hitachi Air Conditioner activates the safety device from excessively low suction pressure, inspect refrigerant levels and piping for blockages. This issue is often due to a shortage or leakage of refrigerant, piping clogging, a closed expansion valve, or a locked fan motor.
What causes Abnormality of picking up circuit for protection (Outdoor unit) in Hitachi YUTAKI S COMBI RWD-4.0NWE-200S Air Conditioner?
If your Hitachi Air Conditioner displays 'Abnormality of picking up circuit for protection (Outdoor unit)', inspect indoor unit PCB and wiring. The cause can be a failure of indoor unit PCB, incorrect wiring, or connection to PCB in the indoor unit.
What to do if Hitachi YUTAKI S COMBI RWD-4.0NWE-200S shows Transmission error between Inverter PCB and Main PCB?
Inspect connection between Inverter PCB and Main PCB.
What does Decrease in discharge gas superheat mean for Hitachi YUTAKI S COMBI RWD-4.0NWE-200S Air Conditioner?
If your Hitachi Air Conditioner displays 'Decrease in discharge gas superheat', check refrigerant charge and inspect related components. Possible causes are excessive refrigerant charge, failure of thermistor, incorrect wiring, incorrect piping connection, or expansion valve locking at opened position (disconnected connector).
How to solve RF Communication failure on Hitachi Air Conditioner?
If your Hitachi Air Conditioner shows 'RF Communication failure', check the RF communication setup. This issue occurs when there is no communication for 1 hour with one or two RF receivers which are bound to the RF-Bridge.
What causes Hitachi Air Conditioner hydraulic alarm pressure?
If your Hitachi Air Conditioner displays 'Hydraulic alarm pressure', check the system for any leaks or blockages affecting water pressure. This alarm indicates that water pressure is not detected in the hydraulic cycle.
How to fix Incorrect PCB Setting in Hitachi YUTAKI S COMBI RWD-4.0NWE-200S Air Conditioner?
If your Hitachi Air Conditioner shows 'Incorrect PCB Setting', correct the DSW settings. This issue is caused by a wrong DSW setting in the case of Co041.
General| Type | Air-to-water heat pump |
|---|---|
| Heating Capacity | 4.0 kW |
| Cooling Capacity | 4.0 kW |
| Energy Efficiency Class | A++ |
| Refrigerant | R32 |
| Energy Efficiency Ratio (Heating) | 4.5 |
| Power Supply | 230V, 50Hz |
Provides critical DANGER and CAUTION statements regarding electrical safety, component handling, and operational hazards.
Details power supply specifications, and temperature ranges for space heating, DHW, swimming pool, and cooling.
Ensures proper power supply, installation checks, wiring size, and protection device requirements.
Guides through initial system setup with a wizard and advanced configuration for system parameters.
Lists common alarm codes for indoor units, their details, and main contributing factors for troubleshooting.
Details various types of abnormalities for outdoor units, including their code, category, type, and main causes.
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