Steps
Step1
Step 2
Step 3
Step 4
Step 5
Press
SET
key again to access the PWM Cycle Length. The lower LCD will
display the current PWM Cycle Length(blinking), in seconds and the upper LCD
will display
CyC
. Then press either the
Up
key to increase or the
Down
key to
decrease the delay to the desired setting. The increment is in 10 seconds. Press
SET
key again to go back to normal operating mode.
To start programming, press the
SET
key for 3 seconds to access the
Fahrenheit/Celsius mode. The lower LCD display will show the current status,
either
F
for degrees Fahrenheit or
C
for degrees Celsius. This annunciator will be
flashing. Then press either
Up
or
Down
key to toggle between the
F
or
C
scales.
Press
SET
key again to access the setpoint mode. The lower LCD will display the
current setpoint (flashing) and the upper LCD will display
S1
annunciator. Then
press either the
Up
key to increase or the
Down
key to decrease the set point to
the desired setting.
Procedures
** Please note that this value as well as all the temperature related value are
in degree Fahrenheit as set in step 1.
Press
SET
key again to access the heating or cooling mode. The upper LCD will
display the current mode, with flashing annunciator, either
H1
for heating or
C1
for cooling. Then press either the
Up
key or the
Down
key to toggle between the
C1
or
H1
operation.
Press
SET
key again to access the PWM differential mode. The lower LCD will
display the current PWM differential (blinking) and the upper LCD will display
annunciator. Then press either the
Up
key to increase or the
Down
key to
decrease the differential to the desired setting.
Setpoint Temperature
Cooling or Heating
Default is:
300 seconds.
PWM Differential
Temperature
Default setting is:
75F
Default setting is:
H1
Default setting is:
8F
PWM Cycle Length
Fahrenheit or Celsius Scale
The default value is
F
Description
LCD Display
75
f
S i
P8f
8
f
H i
Programming Steps for PWM Control Mode
Note: Set PWM slide switch to ON
300
C8c
Keypad Lock:
Keypad can be locked to prevent tempering by unauthorized personnel. This
is done by pressing
SET
,
Up
and
Down
keys at the same time for three
seconds. The word “
L
o
C
” appears on the LCD screen for 3 seconds which
indicates that the keypad is locked. Then input from the keypad is disabled.
Press
SET
,
Up
and
Down
keys at the same time again for another three
seconds to unlock the keypad. The word “
L
o
f
” appears on the screen for 3
seconds which indicates that the keypad is enabled.
Factory setting: unlock
Review Setting Mode:
Press both
Up
and
Down
keys at the same time to review the current control
settings. Then Press
(or
Up
) key to scroll through the settings in the
Down
same order as Program Mode (F/C scale, Setpoint, Differential,
Heating/Cooling, Anti Cycle Time Delay etc.). To exit to normal mode, press
Down
key
one more time from the last setting (eg. AC1) or press both
Up
and
at the same time. In this mode, the settings cannot be
Down
keys
changed.
Reset:
!
Time related parameters such as anti-cycle time delay or PWM cycle
length
After reset, the control will start from the beginning and run on these new
settings. Also, the maximum and minimum recorded temperature are cleared.
Press
RESET
key if the following changes are made after the control is
powered up:
!
Slide switch settings
max
Min
T1
95
f
52
f
If the upper LCD display shows flashing “Err” and
the lower LCD display shows S1, the sensor probe
is short circuited.
Troubleshooting Error Messages
If the upper LCD display shows flashing “LLL” and
the lower LCD display shows S1, the sensor probe
is open circuited or the sensor temperature is out
of the lower range. The relay 1 will be de-
energized.
S i
E88
S i
Lll
S i
Hhh
If the upper LCD display shows flashing “HHH” and the
lower LCD display shows S1, the sensor temperature
is out of the upper range. The relay 1 will be de-
energized.
Use the same procedures as above with flashing “LLL”
The second way is to obtain the P-01 resistance table from the
manufacturer. Then use a ohmmeter to measure the resistance across
the two sensor leads and compare to the temperature reading at the
sensor location.
Action: Verify if the sensor temperature is open circuited or out of the lower
range. If not, check for proper sensor operation by comparing it to a
known ambient temperature. The easiest way is to get an Azel
Technologies DS-60P digital temperature gauge which displays two P-01
sensor temperature. Connect this sensor to DS-60P and compare the
reading with the good sensor.
1. From normal operating mode, press
SET
key once (eg. Just for 1
second).The upper LCD will display
the maximum recorded sensor
temperature and the lower LCD will
display the minimum recorded sensor
temperature.
Maximum and Minimum sensor temperature are
recorded in the memory. To view the max./min.
Temperature:
Max/Min Memory Mode:
2. Press
SET
key once more to exit to
normal operating mode.
