Air Purifying Control [Detection Of Abnormality] - Toshiba RAS-18, 22SKV-E Service Manual

Item

11. Air purifying control [Detection of abnormality]

Air purifying operation
PURE lamp ON
Air purifier power ON ∗
YES
power estimates
Error input is detected
Filter lamp (1Hz) ON
Air purifier power OFF
was detected by
5 times or more
Air purifier power OFF
Filter lamp (1Hz) ON
1
Q
Reset by RESET button.
R
Reset by RESET button or by the stop direction
from the remote controller.
* When the breaker is turned [ON] or RESET
button is pushed while the FILTER indicator is
turned on, the air purifier is not turned on until
the integrated operation time of the indoor fan
exceeds 1 hour after operation start.
It is the safety measures considering an
incomplete drain when electric dust collector has
been cleaned with water.
Operation flow and applicable data, etc.
Air purifier
1000H
NO
NO
YES
Error input
NO
YES
Approx. 10 minutes
passed from the error input
was detected.
YES
2
1. Purpose
The air purifying control function is to
alert the user to trouble in the ionizing or
air purifying operation.
2. Description
Trouble is determined to have occurred
(indicated by the FILTER indicator) in the
following 4 cases.
1) When a count of 1000H has been
reached on the timer
2) When the panel switch has been set to
OFF by the opening of the air inlet
grille, etc.
3) When an abnormal discharge caused
by a symptom such as the build-up of
dirt has been detected while the air
purifier is ON.
4) When the electric dust collector has
not been installed correctly
∗ Trouble case 2) or 3) is deemed to
3. Operation
The sequence that FILTER indicator is
NO
turned on are described in the left
flowchart.
1) When 1000H timer counts up, the
FILTER indicator keeps lighting even if
the operation is stopped by the remote
controller.
The timer is stored in memory of the
microcomputer, and the operation time
is cleared by filter RESET button on
the indoor unit.
(FILTER indicator goes off.)
2) If the air purifying error input was
detected by 5 times or under, turn on
the purifier again approx. 10 minutes
after and judge it again.
If the air purifying error input was
detected by 5 times or more,
determine the error and turn on the
Filter lamp.
– 44 –
FILE NO. SVM-10050
Description
have occurred when the action
concerned continues for more than
one second.