Operation And Performance; Troubles And Causes - intensity MDVS-252(8)W/DDN1 Owner's Manual

3. OPERATION AND PERFORMANCE

Cooling and heating operation of inverter central A/C
The indoor unit of this air conditioner can be controlled solely,
and the indoor unit in the same system can not run cooling and
heating at the same time.
When the Cooling and Heating operation confront with each
other, please determine the problem according to the settings of
main unit Mode dial code S5.
1. When set as the Heating Priority Mode, the indoor unit on
Cooling Mode would stop and there will be Standby or No
Priority displayed on the control panel. Those indoor units which
are running on Heating Mode will run continuously.
2. When the Cooling Priority Mode has been set, the indoor unit
on Heating Mode would stop and there will be Standby or No
Priority displayed on the control panel. Those indoor units which
are running on Cooling Mode will run continuously;
3. When the Priority Mode has been set, the first indoor unit will
work in Heating Mode that is Heating Priority, please refer to the
ITEM 1 for the control logic. If the first indoor unit is work in
Cooling Mode, that is the Cooling Priority Mode, please refer to
the ITEM 2 for the control logic;
4. In terms of the settings only respond the Heating Mode, the
indoor unit will run in Heating Mode normally, if unit be run in the
Cooling Mode or air Supply Mode, the indoor unit will display
Mode Conflicting;
5. In terms of the settings only respond the Cooling Mode, the
indoor unit will run in Cooling Mode or air supply mode normally,
if unit be run in the Heating Mode, the indoor unit will display
Mode Conflicting.
Features of heating operation
Warm air will not be blown out immediately at the beginning of
the heating operation, after 3~5minutes (depends on the indoor
and outdoor temperature), until the indoor heat exchanger
become hot, then blows out warm air.
During Fan operation, if other indoor Units are running on
heating mode, the fan may stop in order to prevent sending heat
wind.
Operation conditions
For good performance, please operate the unit under the
conditions as follow.
Working
Cooling
condition
Main unit
ambient temp.
Main unit
ambient humidity
Indoor
temperature
Main unit
water inlet temp.
Main unit
8HP:2.7 8.1m
water inlet flow
12HP:3.6 10.8m
Protective device may start if running the unit outside the
above condition, which will prevent the unit from operation.
Table.3-1
Heating
Below 80%
/h ; 10HP:3 9m /h;
3 3
3 /h
NOTE
Protection Device
This protection device will stop the unit automatically in case
the air conditioner is on forced running mode. When
protection device is activated, running indicator light is
lightened and query light flashes. Protection device may start
under the following circumstances:
cooling operation:
The air inlet or air outlet of main unit is blocked.
Strong wind is continuously blowing to the air outlet of the
main unit.
heating operation:
Too much dust and rubbish adhere to the dust filter in the
indoor unit
Power cut
If power is cut during operation, stop all the operation
immediately.
Power on again. The operation indicator on the wire
controller flashes.
Push the ON/OFF button again if you want to restart the
unit.
Mishanding in operation
In case of mishandling caused by lighting or mobile wireless,
please switch off the manual power off the manual power.
Push ON/OFF again when restarting.
Heating capacity
The heating process is :absorb heat from outdoor, while
expel heat to indoor by heat pump. Once the outdoor.
temperature drop down, heating capacity is degraded
correspondingly.
It is command to equip with other warming facility, when
outdoor temperature is low.
It is better to equip with additional purchase indoor
auxiliary heating device in paramos area where is in
particularly low outdoor temperature.(See Indoor Unit
Operation Manual for detail information)
Please switch off the power when protection device starts.
Do not restart until the problems are solved.

4. TROUBLES AND CAUSES

CAUTION
In case the following malfunctions, please switch off the
power and contact the local dealer. Incorrect ON/OFF
operation
Fuse or leakage protector is frequently broken.
Foreign matter or water falls in the unit.
NOTE
owner's manual
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