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Thank you for choosing a sanitary hot water heat pump from Hitachi. To obtain the optimum performance and
ensure years of trouble-free operation, please read through this instruction manual. After reading, be sure to keep
this manual conveniently available for future reference.
There are two systems for supplying power to the heat pump; a full-time power supply system and an
off-peak power supply system. Available functionality depends on your power contract. Further details are
provided below.
A: Full-time power supply
B: Off-peak power supply
Contents
Safety precautions O SAFETY PRECAUTIONS ...........................................................3-5
Preparation O Name of each part..........................................................................6
O Name and function of control panel ...............................................7
O Preparing for Operation .................................................................8
O Setting the current time (only when connected to a .......................9
full-time power supply)
O Setting hot water temperature ......................................................10
Operation O Standard Operation ..................................................................... 11
Instruction of each function
O Timer Function
– Sets the same mode every day .......................................12, 13
– Sets a different mode for each day .................................14, 15
O ECO Mode Function ....................................................................16
O Anti-bacteria Function .................................................................17
O Boost Function ............................................................................18
O Emergency Function ...................................................................19
Maintenance O Precautions during maintenance ................................................20
O Regular inspection and maintenance ..........................................20
O Monthly inspection and maintenance ..........................................20
O
Yearly inspection and maintenance ............................................21
O Power failure ...............................................................................22
O Suspension of the water supply ..................................................22
O When the unit will not be used for an extended period ...............22
O Installation .............................................................................23, 24
Troubleshooting O Sounds ........................................................................................25
O Operation .....................................................................................25
After-sales service O Call your sales agent immediately if any of the ...........................26
following symptoms occur
O Speci cations ..............................................................................26
Safet
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