Panasonic S-22ML1E5, Service Manual & Test Run Service Manual

Page: 40 / 175

Mini VRF SYSTEM
Control Functions - Outdoor unit
1 - 30
1
10. Other Functions
2WAY VRF SYSTEM
Control Functions
Case 1
→
The heating indoor units will be forced to thermostat OFF.
Number of thermostat ON indoor units in heating mode
Number of thermostat ON indoor units in heating mode
Number of thermostat ON indoor units in cooling mode >
Case 2
→
system selects cooling mode
system selects heating mode
The cooling indoor units will be forced to thermostat OFF.
Number of thermostat ON indoor units in cooling mode <
While the system is operating, the system judges whether to switch the mode in XX minutes intervals.
While the system is stopped, change the mode immediately.
12. Other Functions
EEPROM setting in outdoor unit
CODE: 27
Setting No.
0
XX
Invalid
(factory preset mode)
30
40 30
40
50 50
60 60
90 90
120 120
180 180
240 240
* “XX” is able to be set in EEPROM on the outdoor unit’s PCB.
(It is impossible to perform the simultaneous cooling/heating operation.)
It is possible to select auto charge over cooling/heating mode in each remote controller even in mini VRF system.
The system changes to cooling or heating operation according to number of thermostat ON mode.
The system selects the mode that has more number of units with thermostat ON.
(1) Auto Change over Cooling/Heating Function
3WAY SYSTEM
Control Functions
13. Other Functions
(2) Maintenance Function for Power Supply Stop of Indoor Unit (E06 ignore)
The system can continue operation even if outdoor unit cannot communicate with some indoor units.
It is necessary to set to EEPROM the allowed number of operating indoor units not to be able to communicate.
The system will continue operating until the following condition is made to be satisfied.
Value set by the code “23” ≥No. of indoor units operated until the last moment because of communicative
disorder caused by power supply stop (excluding stopped indoor units).
However, the upper limit value set by the code "23" must be less than 25% of the total number of indoor units
of the system.
EEPROM setting in outdoor unit
CODE: 23
Allowed number of missing indoor unit Setting No.
-1
This function is invalid
(factory preset mode)
0 0
1 1
2
2
3 3
Never use
4
64
Examples :
In case of 8 indoor units , setting N o. becomes “2”.
* However, the upper limit value set by the code "23" must be less than 25% of the total number of indoor
units of the system.
SM830228-02̲3WAY ECO-i SYSTEM.indb 48 2014/02/19 18:01:20
ON ON ON ON ON OFF OFF OFF
ON ON ON ON ON OFF OFF OFF
ON ON ON ON ON OFF OFF OFF
Operation continue: Stopped units does not count
Normal operation
Error occurs: Indoor unit failure=3 > Setting No “2”
Operation continue: Indoor unit failure=2 Setting No “2”
SM830258-01_欧州向け_1fan_mini_VRF.indb 30 18/03/06 9:09:53