HTW HTW-ATS-O-300VAX, Owners And Installation Manual

Page: 60 / 184

57
NOTE:
1) The timer ‘ON’ and timer ‘OFF’ functions can be set at the same time.
2) The timer settings are repeating.
3) The timer settings are still valid after a sudden power cut.
6
．
button
1) When the heat pump is ON, press this button to turn ‘ON’ the electrical heater. The heater
icon
will be showed, and the electrical heater will work according to the control program
(parameter 3).
2) When the heat pump is ON, press this button and hold for 5 seconds to enable or disable the
fan ventilation function.
3) When the heat pump is OFF, press this button to entry E-heater heating mode.
7
．
button
1) Check the temperatures and EXV open steps(running parameter)
-Press this button to entry temp and EXV open step checking.
-Press the and buttons to check the temp sensor values and EXV open steps
(parameters A-H).
2) Check the system parameters
-In any status, press this button and hold for 5 seconds, entry the system parameter
checking interface.
-Press the
and buttons to check the system parameters.
3) Adjust the system parameters
- When the unit is off, press for 5 seconds, entry the parameter checking interface.
- Press or button to select the parameter, and press button to confirm it.
- Press the and buttons to adjust the selecting parameter, then press to confirm
the setting.
If no action to the buttons for 10 seconds, the controller will exit and save the setting
automatically
.
NOTE: The parameters have been set; the user cannot change the parameters optionally. Please ask
a qualified service person to do this when required.
8
．
Error codes
During standby or running status, if there is a malfunction, the unit will stop automatically and
show the error code on the left screen of the controller.