Toshiba MMY-MUP0801HT8P-TR Service Manual page 60

Item Description of operation, numerical data, and other information
(1) Current, power release value control
12. Inverter
P.C.board
The purpose of this control is to prevent high pressure rise and overheating of electric
parts by reducing the compressor speed when the maximum current and maximum
control for
compressor power value set for each model are exceeded.
The maximum current and power value for each horsepower
of each model are as follows
HP
24*
22*
20
18
16
14
12
10
8
*2 For comp models, it is the maximum value per comp.
Even when the TH sensor temperature ≥ 81°C, the compressor speed is reduced, and
when the TH sensor temperature < 73°C continues, the rotation speed increase is
permitted.
(2) Heat sink overheat abnormality
Stop the compressor operation when the TH sensor temperature exceeds 93°C.
When the above is stopped, the abnormal count is set to 1, and it restarts after 2
minutes and 30 seconds.
If you continue the operation for 10 minutes or more after restarting, the trouble count
will be cleared
A trouble is confirmed with a trouble count of "4".
(3) High pressure SW control
Inverter compressor stops driving the compressor when the high pressure SW is
operating.
When the above is stopped, the abnormal count is set to 1, and it restarts after 2
minutes and 30 seconds.
If you continue the operation for 10 minutes or more after restarting, the trouble count
will be cleared.
The trouble count becomes "4" and the trouble is confirmed.
The above display is "P04".
Maximum current Maximum power
27.00A 17.21kW
25.50A 16.25kW
36.00A 22.94kW
34.00A 21.67kW
30.50A 19.44kW
27.50A 17.52kW
24.50A 15.61kW
20.50A 13.06kW
15.40A 9.81kW
- 60 -
Remarks