Hitachi YUTAKI Series - Reviewing the Operational Data; Manually Overriding the Outputs

127
System testing
SMGB0066 rev.0 - 12/2009
Controller pack
Service Manual
4
 
The table below shows the values that are available to be viewed during Normal Operation mode. These can be shown by
pressing the
button
   
Normal Operation mode
Sensor
Temperatures
TEXT Outdoor temperature °C 12345
TSUP Supply water temperature °C 12345
TMIX Zone1: Mixed supply temperature °C ---45
TRET Return temperature °C 12345
TDHW DHW temperature °C 123-5
TR1 Room temperature °C 12345
V Mixing valve position - ---45
FAUL Fault status - 12345
Controller Setpoints
SSUP Overall system supply setpoint °C 12345
S1 Zone1: supply setpoint °C 12345
SR1 Zone1: room setpoint °C 12345
S2 Zone2: supply setpoint °C 12345
DSET DHW setpoint °C 123-5
SDHW DHW supply setpoint °C 123-5

note
Operational data shown depends on the system conguration (CONF) setting. -
Zone 1 is the heating loop controlled by the System Controller. -
Zone 2 is the heating loop controlled by the Extension Controller. -
 
This feature allows the status of the outputs to be changed in order to test the electrical connections.
ToenterOutputDisplaymodefromNormalOperatingmode,pressthe
SEL
and
SET
buttons together for at least one
second.Thedisplaywillshow“HPS”toindicatethatthecontrollerisinOutputDisplaymodeandshowstherstoutput
“HPS” and its current status.
Use the 1.
and buttons to move up or down the output list according to the table.
Tochangeanoutput,usethe2.
SET
buttontoenterOutputSettingmode.Thevalueoftheoutputwillashtoshowthatit
cannowbechanged.Tochangetheoutputvalue,usethe
and buttons.
Tosavetheoutputsetting,pressthe3.
SET
button.Theashingwillstoptoshowthevaluehasbeensaved,andtheletter
F (Fixed) will appear to show that the output is being overridden. Note that the value must be saved before it takes effect.
Instead,tocancelthechange,andretainthepreviouslystoredvalue,pressthe
SEL
button.
Tocancelthemanualoverrideofanoutput,entertheOutputSettingmodeandthenpress
and together for one
second. The “F” disappears from the display to show that the output is no longer overridden.
Atanytime,pressingthe button will return the display to Normal Operation mode.
Please refer to the electrical wiring connections to identify which relays should be connected to which output for a particular
systemconguration