264
COMMISSIONING
ENGLISH
Troubleshooting
If
operates not properly or it does not start operation, please check following list.
Troubleshooting for Problem while Operation
CAUTION
Turn off the power before proceeding troubleshooting
!
No
Problem
Reason
Solution
1
Heating or
Cooling is not
satisfactory.
• Setting target temperature
is not proper.
• Set target temperature correctly.
• Check if temperature is water-based or air-based. See 'Remote
sensor active' and 'Temp. sensor selection'
• Charged water is not
enough.
• Check pressure gage and charge more water until pressure
gage is indication 2~2.5 Bar
• Water flow rate is low.
• Check if strainer gathers too much particles. If so, strainer
should be cleaned.
• Check if pressure gage indicates above 4 Bar
• Check if water pipe is getting closed due to stacked particles
or lime.
2
Although
electric power
supply is OK
(remote
controller
displays
information), the
unit does not
start working.
• Water inlet temperature is
too high.
• If water inlet temperature is above 57 °C, the unit does not
operated for the sake of system protection
• Water inlet temperature is
too low.
• If water inlet temperature is below 5 °C in cooling operation,
the unit does not operated for the sake of system protection.
Wait while unit warms up the water inlet temperature.
• If water inlet temperature is below 15 °C in heating operation,
the unit does not operated for the sake of system protection.
Wait while unit warms up to 18 °C the water inlet
temperature.
• If you are not using the back up heater accessory
(HA**1M E1), increase the water temperature with the
external heat source (heater, boiler).
If the problem persists, contact your dealer.
• If you want to use the screed drying function, be sure to
purchase and install back up hater accessories (HA**1M E1).
3
Water pump
noise.
• Air purging is not
completely finished.
• Open the cap of air purge and charge more water until
pressure gage is indicating 2~2.5 Bar
• If water does not splash out when the tip(at the top of the
hole) is pressed, then air purging is not completed yet. If well
purged, the water will splash out like fountain.
• Water pressure is low.
• Check if pressure gage indicates above 0.3 Bar.
• Check if the expansion tank and pressure gage operates well.
4
Water is flood
out through
drain hose.
• Too much water is
charged.
• Flood out water by opening the switch of the safety valve until
pressure gage is indicating 2~2.5 Bar.
• Expansion tank is damaged.
• Replace the expansion tank
5
DHW is not hot.
• Thermal protector of water
tank heater is actived.
• Open the side panel of the DHW tank and push the reset
button of the thermal protector. (for more detail information,
please refer to installation manual of DHW tank.
• DHW Heating is disabled.
• Select DHW Heating Operation and identify if icon is displayed
on the remote controller.