Defrost Control; Start Of Heating Operation; High-Pressure Switch; Control Of Compressor Case Thermo - Toshiba RAV-GM561ATP-E Service Manual

10. Defrost control

1 In heating operation, defrost operation is performed when TE sensor temperature satisfies any condition in
A zone to D zone.
2 The defrost operation is immediately finished if TE sensor temperature has become 12°C continuing for
3 seconds or more, or it also is finished when condition of 7°C < TE < 12°C has continued for 1 minute.
The defrost operation is also finished when defrost operation has continued for 10 minutes even if TE
sensor temperature has become 7°C or lower.
3 After defrost operation has finished, the compressor and the outdoor fan start heating operation after
stopped for approx. 40 seconds.

Start of heating operation

TE [°C]
-2
-10
-18
* From 10 minutes to 15 minutes after a heating operation started, the minimum value of TE is stored in
memory as TEO and the minimum temperature of TO as ToO.
When status of [(TEO – TE) – (ToO – TO) ≥ 3
A zone
When status of [(TEO – TE) – (ToO – TO) ≥ 2
B zone
When status of [GM56, 80 : TE ≤ – 25
C zone
D zone
a
b
c
d

11. High-pressure switch

1) When the high-pressure switch operates, the operation of the compressor is terminated.
2) The compressor restarts after 5 minutes using [1] as an error count.
After restart, the error count is cleared when operation continues for 10 minutes or more.
3) An error is confirmed with the error count [10].
4) For the indicated contents of error, confirm using the check code table.

12. Control of compressor case thermo

1) The compressor stops when the case thermo of the compressor operated.
2) When the case thermo operated for approx. 80 seconds, H04 error code is displayed on the
wired remote controller. → Refer to the Check Code.
3) When the case thermo is reset, the operation restarts.
0 15
10
*
At normal TO
continued for 20 seconds
continued for 20 seconds
When compressor operation status with TE < – 2
GM56, 80 GM110, 140
43
41
31
90
a
c b
B zone
C zone
°
C] When status of [(TEO – TE) ≥ 3
°
C] When status of [(TEO – TE) ≥ 2
°
C, GM110,140 : TE ≤ –18
55
45
39
150
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FILE NO. SVM-18043
d [min.]
A zone
D zone
At error TO
continued for 20 seconds
continued for 20 seconds
°
C] continued for 20 seconds
°
C is added by d times
°
C]
°
C]