Icon Name Explanation
Heater step Indicates which of the 3 possible heater steps is applied on space heating
DHW Heater Informs about DHW Heater operation. (If it is enabled)
Solar Combination with solar energy
Compressor
Compressor enabled (For YUTAKI S, S COMBI)
Compressors enabled.
1: R410A/R32
2: R-134a (For YUTAKI S80)
Boiler Auxiliary boiler is working
Tariff Tariff signal informs about some cost conditions of the consumption of the system
Defrost Defrost function is active
Central
Central mode icon is shown after some central order has been received and for the next 60
seconds.
Central error
Forced OFF
When forced off Input is congured and its signal is received, all the congured items (C1, C2, DHW, and/or
SWP) are shown in OFF, with this small icon below
Auto ON/OFF
When daily average is over auto summer switch-off temperature, circuits 1 and 2 are forced to OFF (Only if
Auto ON/OFF enabled)
Test Run Informs about the activation of the “Test Run” function
Anti-Legionella Activation of the Anti-Legionella operation
DHW boost It activates the DHW heater for an immediate DHW operation
ECO mode
- No icon means Comfort mode
ECO/Comfort mode for circuits 1 and 2
Night Shift Informs about night shift operation
CASCADE
CONTROLLER
Informs about the activation of the “CASCADE” mode.
CASCADE CONTROLLER in alarm state
Fan stopped by
Demand OFF
Informs about the stopagge of fan 1 or 2 by Demand OFF
YUTAKI CASCADE CONTROLLER ATW-YCC-03
PMML0575 rev.2 - 03/2022
268
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