Panasonic U-4LE1E5, Service Manual, Page: 14 / 133

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Mini VRF SYSTEM
Control Functions
3. Special Controls
(2) Control in the Heating Mode
(2-1) Discharge temperature: less than 30°C
(2-2) Discharge temperature: over 30°C
Control hour
Outdoor unit
Compressor
Elec. cont. valve*4
Frequency 54Hz
250pulse (Max. 3 minutes) 480pulse (Max. 17 minutes) 300pulse ( Max. 3 minutes)
Indoor unit
Fan
Elec. cont. valve*4
Preset wind speed or fixture setting to "Stop" by indoor unit control system
480pulse
Min. 2 minutes 30 seconds to Max. 23 minutes
(Discharge degree-of-overheating: Td*1 - HPT*2>12 K*3)
Control hour
Outdoor unit
Compressor
Elec. cont. valve*4
Frequency 22Hz
A certain pulse calculated by the outdoor air temperature and total load of indoor unit
Indoor unit
Fan
Elec. cont. valve*4
Preset wind speed or fixture setting to "Stop" by indoor unit control system
80pulse
Min. 1 minute to Max. 6 minutes
(Discharge degree-of-overheating: Td-HPT>12 K)
*1
*2
*3
*4
Td: Discharge temperature
HPT: High pressure saturated temperature
K: Difference in temperature (1K=1°C)
Elec. cont. valve: Electronic control valve
NOTE
SM830195-01̲Mini VRF SYS.indb 8 SM830195-01̲Mini VRF SYS.indb 8 2011/12/20 16:31:03 2011/12/20 16:31:03