Hitachi YUTAKI ATW-YCC-03 Installation And Operation Manual page 24

Icon Name
Pump
Heater step
DHW Heater
Solar
Compressor
Boiler
Tariff
Defrost
Central
Forced OFF
Auto ON/OFF
Test Run
Anti-Legionella
DHW boost
ECO mode
PMEN0581 rev.2 - 04/2023
This icon informs about pump operation.
There are three available pumps on the system. Each one is numbered, and its
corresponding number is displayed below to the pump icon when it is operating
Indicates which of the 3 possible heater steps is applied on space heating
Informs about DHW Heater operation. (If it is enabled)
Combination with solar energy
Compressor enabled
Compressors enabled.
1: R410A/R32
2: R-134a (Not applicable)
Auxiliary boiler is working
Tariff signal informs about some cost conditions of the consumption of the system
Defrost function is active
Central mode icon is shown after some central order has been received
When forced off Input is configured and its signal is received, all the configured
items (C1, C2, DHW, and/or SWP) are shown in OFF, with this small icon below
When daily average is over auto summer switch-off temperature, circuits 1 and 2
are forced to OFF (Only if Auto ON/OFF enabled)
Informs about the activation of the "Test Run" function
Activation of the Anti-Legionella operation
It activates the DHW heater for an immediate DHW operation
- No icon means Comfort mode
ECO/Comfort mode for circuits 1 and 2
Explanation
and for the next 60 seconds.
Central error
4
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