Outline Of Control - Toshiba MMU-P0121H Service Manual

3-5. OUTLINE OF CONTROL

3-5-1. Outdoor Unit
3-5-1-1. Operation start/Operation end
The compressor, solenoid valve, pulse motor valve (PMV A), outdoor fan, etc. are controlled by a command from
the indoor controller. The server outdoor unit starts/stops by a command from the master outdoor unit.
Operation signal from indoor
Inverter drive
Outdoor fan output
Fixed-speed MG-SW output
Each solenoid valve output
4-way valve output
(OFF in cooling operation)
PMV A output
3-5-1-2. Thermostat ON/Thermostat OFF
Operation signal from indoor
Inverter drive
Outdoor fan output
Fixed-speed MG-SW output
Each solenoid valve output
4-way valve output
(OFF in cooling operation)
PMV A output
Operation start Operation stop
ON
OFF
ON
OFF
ON or OFF
OFF
(By command indoor)
ON or OFF
OFF
ON
OFF
Full
Specified opening
close
Thermostat ON Thermostat OFF
ON
OFF
ON
OFF
ON or OFF
OFF
(By command indoor)
ON or OFF
OFF
ON
Full
Specified opening
close
3-26
2 minutes and
30 seconds
Full
close
2 minutes and
30 seconds
Full
close