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IOM_WPHBA HE-WPHA HE_091a1201_207815_180701_EN
HORIZONTAL WATER-AIR COMPACT PACKAGED UNITS
WPHA HE / WPHBA HE
OPERATION
TH TUNE CONTROL
This controller, comes as standard with 2 compressor units (until model 4502.2)
ON-OFF CONTROL
Press and hold the button (On / Off) for two seconds to turn the thermostat on or off. The word "OFF" will be displayed on the thermostat
screen when it is off.
NOTE: The thermostat will show "OFFd" if the remote on-off contact is open and "OFFs" when the shutdown is done through Modbus.
TEMPERATURE ADJUSTMENT
Adjust the setpoint temperature rotating the central button.
SYSTEM MODES
Press (Mode) button to alternate between the available operations modes.
Available system modes:
Cooling Mode
– Display will show the icon: and in the down-Right corner: .
Heating Mode
– Display will show the icon: & . This mode is not available for cooling only machines.
Automatic Mode
– Display will show: “
Auto
”. This mode is not available for cooling only machines. This operating
mode will change between cold and heat depending on the selected temperature setpoint. The mode that is active at
each moment will be indicated in the lower right part of the display: Heating,
Cooling.
Only Fan
– Display will show two icons at the same time:
. The fan will operate in continuous mode and will
not take into account the temperature value introduced in the setpoint.
NOTE:
When the outdoor temperature is very low and you want the machine to operate in
cooling mode
, either by
selecting this mode or by selecting the
Auto mode
. If the machine does
NOT
have condensation control then it could
stop due to the activation of an alarm.
Beware of always leaving
Auto mode
active! The conditions that lead to the previous error could be given.
Indoor Fan Modes:
“Fan / Autofan” with Ventilation “Continuous / Auto”
Press (Fan) button, to alternate between automatic or continuous ventilation modes.
With automatic fan - The icon on the screen will show "Auto".
The fan only works when there is a request for cold or heat.
Without automatic fan - The word "Auto" disappears from the icon.
The fan operates in continuous mode.
Warnings and Information signals
On the Th-tune screen, some 4-letter alphanumeric characters (AL01) may appear,
When the (
) symbol also appears then it is an
alarm
, otherwise it is a
warning
or an
information signal
. The warnings
disappear automatically when the cause disappears, however the alarms have to be reset.
Description of the Warning Codes
CODE
DESCRIPTION
AVFS
Warning of Dirty Filter
IFAb
No water flow Info.
OFFd
The remote contact On-off is open.
OFFs
Stoppage through supervisor (Modbus, Bacnet, etc.)
Security stoppage
Alarms
All alarms are serious, cause the unit stoppage and activate an output signal through a relay.
Alarm Codes Reset
Press the central button several times until
RES
appears
(only available when there is at least one
active alarm).
All alarms, whose causes have disappeared or
have been solved, are cancelled.
Turn the central button to change from 0 to 1.
Press the central button once.
When the reset has been made, the text will
change to OK.
After the reset, the thermostat will return automatically to its normal state, displaying the ambient or return temperature as configured.
