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15
To reset the alarms in alarm history folder
The controller is designed with ability to reset or clear the alarm history
1. Follow instructions above to enter the passcode and open the reset folder
(rStF)
.
2. The screen displays
rSAL
on line
2
and
nO
on line
1
, press
button the nO is flashing
3. Press arrow to change
nO
to
YeS
, then press button reset the alarms. The screen flashes once and returns to
rSAL
with
nO
one line
2
4. Press
arrow to navigate to
ESC
, then press
to returns to
rStF
screen.
5. Press
arrow to navigate to
LOG Out
, then press
button to return to the main screen or if no action for longer than
60
seconds the
screen will be automatically reverted to the main screen.
To reset parameters to factory default
This option is ONLY applied if the operator wants to reset all control parameters back to factory default.
1. Follow instructions above to enter the passcode and open the reset folder (rStF).
2. The screen displays rSAL, press
arrow to navigate to rSPA and then press
button
3. The screen displays rSPA one line
1
and the word nO on line
2
in steady state, press
button and then the word nO is flashing and
ready to change
4. Press
arrow to change nO to YES. Press
button the screen displays PSd with
0000
on line
2
5. Press
button to enter to passcode. Press
button few times until the last digit of
0000
flashing
6. Press
arrow to change
0
to
2
, press
button to authorize the reset of the parameters
7. The screen returns to rSPA screen in steady state.
8. Press
arrow to navigate to ESC, then press
to returns to rStF screen.
9. Press
arrow to navigate to LOG Out, then press
button to return to the main screen or if no action for longer than
60
seconds the
screen will be automatically reverted to the main screen.
Displaying temperature data on screen
There are two temperature probes in the air conditioner where one is reading the enclosure air temperature incoming to the air conditioner
and other is reading the cooled air leaving the air conditioner and entering the enclosure. Both temperature data are displayed on the screen
where line
1
is the reading of the inlet temperature and line
2
is the reading of the outlet temperature.
Compressor restart time delay
A factory set
3
minute (
180
seconds) restart delay exists to reduce residual back pressure before allowing the compressor to restart. The
compressor will stay off for the entire restart duration after the compressor is disabled. A flashing compressor icon
on the display
indicating that the unit is in a compressor restart delay mode while calling for cooling or waiting for compressor to turn ON.
Alarm output contact
The digital controller has a normally open dry contact alarm output with a resistive load rating of
250
VAC @
5
amps max. The two yellow
18
AWG
wires located at the back of the air conditioner provide a connection to this output.
Note: do not apply power to this normally open dry contact
(two yellow
18
AWG wire).
This alarm relay output is configurable and provides user with the ability to change the configuration to support their
external device. Parameter C
21
controls the alarm relay output logic and can be accessed through security code “
0022
” in the PArF folder.
Para
Description
Configuration
C
21
Alarm relay output logic
0
= normally open (NO) – factory default
1
= normally closed (NC)
Alarm input connection
The digital controller can accept a dry contact/switch input via the two
18
AWG white wires located at the back of the air conditioner. This
input is associated with the controller display alarm mnemonic dO (door open). To use this feature, remove the splice connector, and connect
the two white wires to customer supplied enclosure door switch in its place.
Note:
do NOT apply power to this dry contact input.
