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COMMISSIONING
ENGLISH
Troubleshooting
If operates not properly or it does not start operation, please check following list.
Troubleshooting for Problem while Operation
No Problem Reason Solution
1
Heating 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' in
Chapter6.
• 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 gauge indicates above 4 Bar
• Check if water pipe is getting closed due to stacked paticles
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 78 °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, 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 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.
4 DHW is not hot.
• Thermal protector of water
tank heater is activated.
• 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.
Turn off the power before proceeding troubleshooting.
CAUTION
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