Toshiba RAV-SM1401BT-E Short intermittent operation preventive control, Corrected value

NOTIFICATION

It is not an abnormal phenomenon that electro-noise may be heard while heating the coil.

7. Short intermittent operation preventive control

•The compressor may not stop for preventing the compressor for 3 to 10 minutes after start of the operation even if Thermo-OFF signal has been received from the indoor. This phenomenon is not abnormal. (Continuous operation time of the compressor differs according to the operating status.)

‚If the equipment is stopped from the remote controller, the operation does not continue.

8.High-pressure suppression TE control (For SM800)

•This control suppresses that pressure becomes abnormally higher during cooling operation.

‚Stop the compressor under condition of TE ≥ 67°C, and count 1 on the error count.

ƒAfter 2 minutes 30 seconds passed, if TE < 67°C, the compressor restarts and the error count is cleared when the operation continues for 10 minutes.

„When TE ≥ 67°C is detected again within 10 minutes, 1 is added to the error count and restart is repeated.

…If the error counts 10 are recognized, it is determined as an error and restart is not performed. Error code ‘P04’ is displayed.

†After restarting the compressor, continue controlling by using 70% to 90% of the control value of the current release control for minimum 30 minutes.

9.Over-current preventive control

•This control function stops the compressor when over-current preventive circuit has detected an abnormal current.

‚The compressor restarts with error count 1 after 2 minutes 30 seconds.

ƒIf the error counts 4 are recognized, it is determined as an error and restart is not performed. Error code ‘H01’, ‘H02’ or ‘P26’ is displayed.

10.Current release value shift control

1)For SM800, SM1100, SM1400

•This control function prevents troubles of the electron parts such as G-Tr of inverter of compressor drive system and troubles of the compressor during cooling operation.

‚This control function corrects the current release control value (1) in item 3 of 9-1. by Current release control.

ƒThe value to be corrected is based upon the following control diagram and correction value table.

TO [˚C]

T+8

T+7

T+5

T+4

T+2

T+1

T

T-1

Corrected value

I1 x a%		T	a	b	c	d
	SM800	39°C	40%	60%	80%	85%
I1 x b%	SM1100	39°C	50%	70%	80%	90%
I1 x c%	SM1400	39°C	70%	80%	90%	95%
I1 x d%
As I1

2)For SM560

The current release value of a single-phase model is se- lected from the right table according to TO sensor value.

Current release value shift control

	TO	SM560
45 ≤	TO	5.92
40 ≤	TO < 45	6.75
	TO < 40	9.00

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