- 48 -
In normal condition in which float switch is not operated,
230V is applied across the pins 1 and 2. At this time,
point E is at the GND level. If the float switch is operated,
E will be at the level of 5V.
A circuit which allows for the take-out of the signals of
abnormal, operation and Compressor-ON. Point T is a
LED which lights at abnormal.
The connector pin 4 outputs 12V. When you want to see
the signal of compressor-ON, you can do it simply with
the circuit below.
8.6 Serial signal circuit
(Between remote controller and indoor unit)
This is the circuit for transmitting and receiving the signals
between the remote controller and indoor unit in serial
signal.
Point Q is a LED (green) which flashes when there are
signals from the remote controller. At N and P , the
signals as illustrated below are output.
8.8 Float switch circuit
8.7 Optional circuit
Compressor ON
Operation
Abnormal
CN13
AMP-4
WHI
CN12
WHI
MOLEX-2
IC04 TLP621 (04-GR)
IC05 TLP741J (04)
Q05
RN2201
Float Switch
12 v
Comp
LED
À Á Â ¯
BLK
MOLEX-2
Q10
RN1205
Q09
RN1205
Q08
RN1205
230 v
⇑
⇓
5 v
E
T
P
Serial output
N
Serial input
Q
Heronhill - for all your Toshiba requirements
Tel: 01823 665660
www.heronhill.co.uk
Fax: 01823 665807
