JOHNSON CONTROLS
102
FORM 155.33-ICOM2.EN.GB
ISSUE DATE: 12/4/2017
SECTION 7 – MAINTENANCE
Refrigerant Pump Manual Stop
The refrigerant pump can be stopped manually for
maintenance purposes. It can be stopped even while the
chiller-heater is operating.
1. Navigate to the Control Panel Setting screen.
2. Press the Refrigerant Pump
Stop
button.
After maintenance of the refrigerant
pump is complete, be sure to reset it to
Auto. Continued operation in stop state
may cause damage to and failure of the
chiller-heater.
LD21536
Purge Manual Start and Stop
The purge can be started or stopped manually.
1. Navigate to the Setting screen on the Control Pan-
el.
LD21973
2. Press the Purge Mode
Manual
button.
3. Press the Manual Purge
ON
button.
The purge solenoid valves open. The purge operation
begins.
4. Press the Manual Purge
OFF
button when the
purge process is complete.
5. The solenoid valves close.
After maintenance of the purge system
is complete, be sure to reset it to Auto.
Continued operation in the manual mode
may cause damage to and failure of the
chiller-heater.
6. Press the Purge Mode
Auto
button
Operation Mode Selection
You can select the operation mode of the chiller-heater.
1. Navigate to the Control Panel Setting screen.
2. Press and hold the Operation Mode
Cooling
or
Heating
button. Hold the button for 15 seconds.
LD21537
Set each cooling or heating changeover
valve to the correct operation mode.
