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Mitsubishi Electric CAHV-P500YA-HPB Instruction Manual

Air-cooled heat pump unit cahv series.
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Air-Cooled Heat Pump Unit
Instructions Manual
CAHV-P500YA-HPB
Thoroughly read this manual prior to use.
Save this manual for future reference.
Some of the items in this manual may not apply to made-to-order units.
Safety Precautions...................................................................
1. External Appearance and Components ...............................
2. Operating the Unit................................................................
[1] Initial Operation.................................................................
[2] Daily Operation .................................................................
3. Troubleshooting ...................................................................
[2] Calling for Service...........................................................
4. Safety and Maintenance Information .................................
[1] Contact information............................................................
[2] Refrigerant Information ...................................................
[3] Periodic Inspection..........................................................
5. Warranty ............................................................................
[1] Terms and Conditions.....................................................
[2] Exclusions.......................................................................
6. Main Specifications............................................................
CAHV
CONTENTS
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   Summary of Contents for Mitsubishi Electric CAHV-P500YA-HPB

  • Page 1: Table Of Contents

    Air-Cooled Heat Pump Unit CAHV Instructions Manual CAHV-P500YA-HPB CONTENTS Safety Precautions..............1. External Appearance and Components ....... 2. Operating the Unit..............[1] Initial Operation..............[2] Daily Operation ..............[3] Using the Unit in Sub-freezing or Snowy Conditions..3. Troubleshooting ..............

  • Page 2: Safety Precautions

    Safety Precautions • Thoroughly read the following safety precautions prior to use. • Observe these precautions carefully to ensure safety. WARNING Indicates a risk of death or serious injury CAUTION Indicates a risk of injury or structural damage IMPORTANT Indicates a risk of damage to the unit or other components in the system ■General WARNING Do not install the unit in a place where large...

  • Page 3

    Always replace a fuse with one with the Properly install all required covers and correct current rating. panels on the terminal box and control box to keep moisture and dust out. The use of improperly rated fuses or a substitution of fuses with steel or copper wire Dust accumulation and water may result in may result in fire or explosion.

  • Page 4

    To prevent environmental pollution, In areas where temperature can drop low dispose of brine in the unit or cleaning enough to cause the water in the pipes to solutions according to the local freeze, operate the unit often enough to regulations.

  • Page 5

    ■General IMPORTANT To avoid damage to the unit, use appropriate To maintain optimum performance and reduce tools to install, inspect, or repair the unit. the risk of malfunction, keep the air pathway clear. To reduce the risk or malfunction, turn on the Do not unnecessarily change the switch power at least 12 hours before starting settings or touch other parts in the...

  • Page 6: External Appearance And Components

    1. External Appearance and Components Discharge air outlet Control box Service panel Intake air inlet Service panel Hot water outlet Hot water inlet Control box 6/20...

  • Page 7: Operating The Unit

    2. Operating the Unit [1] Initial Operation 1. Make sure the ON/OFF switch that controls the unit on the on-site control panel is switched off. 2. Switch on the main power. 3. Leave the main power switched on for at least 12 hours before turning on the ON/OFF switch that controls the unit on the on-site control panel to warm up the compressor.

  • Page 8: Using The Unit In Sub-freezing Or Snowy Conditions

    [3] Using the Unit in Sub-freezing or Snowy Conditions In areas where temperature drops to In areas where temperature can drop low freezing during the periods of non-use, enough to cause the water in the pipes to blow the water out of the pipes or fill the freeze, operate the unit often enough to pipes with anti-freeze solution.

  • Page 9: Troubleshooting

    Troubleshooting If a problem occurs, please check the following before calling for service. (1) Check the error code against the table below. (2) Check for possible causes of problems listed in the "Cause" column that correspond to the error code. (3) If the error codes that appear on the display are not listed in the table below, or no problems were found with the items listed in the "Cause"...

  • Page 10

    Error reset *3 Unit Error Cause Cause side Remote code *1 Error type (PCB) (Installation/Setting error) (Parts problems) (PCB *2) Operation SWS1 Heat exchanger freeze up *6 Drop in water flow or water supply cutoff • 4-way valve switching failure 1104 during the defrost cycle Water temperature drop during defrost cycle...

  • Page 11

    Error reset *3 Unit Error Cause Cause side Remote code *1 Error type (PCB) (Installation/Setting error) (Parts problems) (PCB *2) Operation SWS1 Inverter DCCT sensor • Poor contact at the INV board connector CNCT error 5301 • Poor contact at the INV board 5305 connector DCCT •...

  • Page 12: Calling For Service

    [2] Calling for Service If the problem cannot be solved by following the instructions provided in the table above, please contact your maintenance provider (listed on the back cover) or the nearest Mitsubishi Electric dealer along with the types of information listed below.

  • Page 13: Safety And Maintenance Information

    4. Safety and Maintenance Information [1] Contact information Manufacturer Mitsubishi Electric Corporation AC&R Systems Works Address: Phone Number: Installer See the back cover. Maintenance provider See the back cover. [2] Refrigerant Information ・See the nameplate for the refrigerant type, factory charged amount, and CO equivalent.

  • Page 14

    Cont’d Check that the evaporating While heating water, use the temperature temperature is in the normal range. reading of the sensor on the air-side heat exchanger inlet pipe as the evaporating temperature. Intake temperature: -3 – +8 K Compressor Check that the operating current is Compare the operating current against the normal.

  • Page 15

    Quality Standards for Heating and Makeup Water Properties Quality standards Corrosion and scaling tendencies Makeup water Circulating water Circulating water Corrosion Scaling [Between 20ºC [Between 60ºC (exclusive) and 60ºC (exclusive) and 90ºC (inclusive)] (inclusive)] Ph (25ºC) 7.0–8.0 7.0–8.0 7.0–8.0 6.8 or below 8.0 or above Electrical 30 or below...

  • Page 16: Parts Inspection And Replacement Intervals

    [4] Parts Inspection and Replacement Intervals The table below shows the recommended inspection and replacement intervals. Replacement interval is a recommended replacement period and not the warranty period. Note that the replacement interval depends on usage environment. Check the unit components periodically and replace them as necessary before problems arise to prevent adverse effects on other parts.

  • Page 17: Warranty

    The unit is covered by the warranty for a period of 1 year from the date of installation. Only the affected parts or the parts authorized by Mitsubishi Electric on the compressor and the heating unit will be replaced free of charge. Malfunctions resulting from the use of unit as listed below shall not be covered even during the warranty period.

  • Page 18: Main Specifications

    KC94G195X01 Water-side Copper brazed stainless steel sheet Heat exchanger Air-side Plate fins and copper tubes Type Inverter scroll hermetic compressor Manufacturer MITSUBISHI ELECTRIC CORPORATION Starting method Inverter Compressor Motor output 7.5 x 2 Case heater 0.045 X 2 Lubricant MEL 32...

  • Page 19

    *1 Under normal heating conditions at the outdoor temperature of 7ºCDB/6ºCWB (44.6ºFDB/42.8ºFWB) and the outlet water temperature of 45ºC (113ºF) *2 Under normal heating conditions at the outdoor temperature of 7ºCDB/6ºCWB (44.6ºFDB/42.8ºFWB) and outlet water temperature of 70ºC (158ºF) *3 Under normal heating conditions at the outdoor temperature of 7ºCDB/6ºCWB (44.6ºFDB/42.8ºFWB) and the unit is set to the “Capacity Priority”...

  • Page 20

    Installer’s Name, Address, and Phone Number Maintenance Provider’s Name, Address, and Phone Number AC&R Systems Works: 6-5-66 Tebira, Wakayama-shi, Wakayama, 640-8686, Japan WT06127X01 20/20...

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