HVAC / Air Conditioners
Installation and Operation Manual for Hitachi RCD-(0.8-6.0)FSR 2-way Cassette Indoor Units
Quick guide for the Hitachi RCD-(0.8-6.0)FSR 2-way cassette indoor unit. Includes installation, operation, maintenance, and troubleshooting instructions.
Quick answers from the manual
Quick answer
- This manual provides installation and operation instructions for Hitachi RCD-(0.8-6.0)FSR 2-way cassette indoor units, including safety precautions for R32 refrigerant. p. 1, 33
Key actions
- Clean air filter when filter sign is ON p. 38
- Perform drain piping with 1/25 to 1/100 downward slope p. 55
First start
- Supply power for 12 hours before start-up after long shutdown. p. 35
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Problems and fixes
Operation Unavailable
Check main power source and fuse/circuit breaker.
p. 41Error codes
| Code | Meaning | Action | Pages |
|---|---|---|---|
| 01 | Activation of protection device (float switch) | Check drain system | p. 43 |
| 05 | Abnormality power source phases | Check power source phase | p. 43 |
Maintenance and reset
- Reset filter sign via menu p. 38
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Tightening Torque (M3.5) | 1.2 N-m | For electrical terminals | p. 59 |
Where to find it in the PDF
- Safety Precautions p. 5, 6, 7, 8
- Installation p. 46, 47, 48, 49
- Operation p. 35, 36, 37
- Maintenance p. 38, 39
- Troubleshooting p. 40, 41, 42, 43
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This manual provides essential information for the installation, operation, and maintenance of the Hitachi RCD-(0.8-6.0)FSR 2-way cassette indoor units. Always ensure the unit is installed by qualified personnel and that all safety precautions, especially regarding R32 refrigerant, are followed.
Safety Precautions
- R32 Refrigerant: This unit uses R32, a flammable refrigerant. Installation must comply with local regulations, and minimum floor area requirements must be met if the total charge is 1.84kg or more.
- Electrical Safety: Ensure the unit is connected to a circuit breaker of the specified capacity. Do not handle electrical components without disconnecting the main power supply.
- Installation Environment: Do not install in areas with oil, sulphurous gas, flammable gases, or saline/acidic/alkaline atmospheres.
Installation
- Suspension: Use M10 or W3/8 suspension bolts. Ensure the foundation is strong enough to support the unit.
- Drain Piping: Install with a downward slope of 1/25 to 1/100. Do not create upward slopes or rising parts.
- Electrical Wiring: Use shielded twist pair cables for control lines. Ensure all terminals are tightened to the specified torque (M4: 1.0-1.3 N-m; M3.5: 1.2 N-m).
- Air Panel: Install the optional air panel (P-AP90DNA or P-AP160DNA) according to the provided instructions, ensuring no gaps exist between the panel and the ceiling.
Operation
- Efficient Use: Keep windows and doors closed during operation. Use a circulator if warm air accumulates near the ceiling.
- High Speed Setting: Adjust high speed settings based on ceiling height to ensure proper air distribution.
- Automatic Control: The system includes features like Three Minute Guard (to protect the compressor), Oil Return Operation, and Frost Prevention.
Maintenance
- Air Filter: Clean the air filter when the filter sign is ON. Vacuum dust or wash with water/neutral detergent. Dry in the shade.
- Air Inlet Grille: Can be removed for cleaning. Wipe the air panel with a soft cloth soaked in lukewarm water.
Troubleshooting
If the unit stops, check the remote control for alarm codes. Common issues like mist, odor, or unusual sounds are often related to environmental conditions or normal operation (e.g., refrigerant flow sounds). If the problem persists, contact your distributor.
Manufacturer information
Hitachi, Ltd.
Practical help
Common problems
Operation stopped
Check if the motion sensor is activated or if there was a power failure. Restart the operation.
Mist from indoor unit
May occur in humid environments or if oil is attached to fins (e.g., in kitchens). Raise set temperature and air flow volume.
Odor from indoor unit
Ventilate the unit in fan mode and clean the air filter, air outlet, and air inlet flat grille.
Insufficient cooling/heating
Check if the air filter is clogged, windows/doors are open, or if air flow direction is inappropriate.
Before use
- Ensure the main power source is turned ON.
- Check that the outdoor unit is not covered with snow or ice.
- Ensure the air filter is clean and properly installed.
- Check that there are no obstacles near the air inlet and outlet.
- Verify that the operation mode and temperature settings are appropriate.
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Specs in practice
- R32 Refrigerant
- Flammable refrigerant gas. Requires specific installation area calculations if charge is >= 1.84kg.
- Drain Pipe Pitch
- Must be installed at a downward slope of 1/25 to 1/100 to ensure proper drainage.
- Tightening Torque (M4)
- 1.0 - 1.3 N-m for electrical terminal connections.
Images and diagrams
- The manual includes diagrams for suspension bolt positioning, drain piping slopes, and electrical wiring connections.
- Specific diagrams show the correct installation of the air panel and the removal of the air inlet flat grille.
Model compatibility
- RCD-(0.8-6.0)FSR units are compatible with specific outdoor units; refer to technical documentation for combination details.
- Optional air panels P-AP90DNA and P-AP160DNA are model-specific.
Manual page author
Michael Turner
Technical manual editor