Owner's manual

Keypad Lock:
Keypad can be locked to prevent tempering by unauthorized personnel. This
is done by pressing , and keys at the same time for three
seconds. The word “ ” appears on the LCD screen for 3 seconds which
indicates that the keypad is locked. Then input from the keypad is disabled.
Press , and keys at the same time again for another three
seconds to unlock the keypad. The word “ ” appears on the screen for 3
seconds which indicates that the keypad is enabled.
Factory setting: unlock
SET Up Down
SET Up Down
LC
Lf
o
o
Review Mode:Setting
Press both and keys at the same time to review the current control
settings. Then Press (or ) key to scroll through the settings in the
same order as Program Mode (F/C scale, Stage 1 Setpoint, Stage 1
Differential, Stage 1 Heating/Cooling, Stage 1 Anti Cycle Time Delay,
). To exit to normal mode, press one more time
(eg. AC2) or press both and at the same time.
In this mode, the settings cannot be changed.
Up Down
Up
Up
Stage
2 Setpoint, Stage 2 Differential, Stage 2 Heating/Cooling, Stage 2 Anti Cycle
Time Delay from
the last setting
Down
Down
Down
key
keys
Reset:
Press key if the following changes are made after the control is
powered up:
Slide switch settings
T
RESET
!
!
ime related parameters such as anti-cycle time delay
After reset, the control will start from the beginning and run on these new
settings.Also, the maximum and minimum recorded temperature are cleared.
max
Min
T1
95f
52f
Troubleshooting Error Messages
If the upper LCD display shows flashing “Err” and
the lower LCD display shows S1(sensor 1) or
S2(sensor 2), the sensor probe is short circuited.
The corresponding relay output is de-energized.
If the upper LCD display shows flashing “LLL” and
the lower LCD display shows S1 or S2, the sensor
probe is open circuited or the sensor temperature
is out of the lower range. The corresponding relay
will be de-energized.
Si
E88
Si
Lll
Si
Hhh
If the upper LCD display shows flashing “HHH” and the
lower LCD display shows S1 or S2, the sensor
temperature is out of the upper range. The
corresponding relay will be de-energized.
Use the same procedures as above with flashing “LLL”
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.
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.
Max/Min Memory Mode:
Maximum and Minimum sensor temperature are
recorded in the memory. To view the max./min.
Temperature:
1. From normal operating mode, press key
once (eg. Just for 1 second):
If 1 sensor input is selected,
SET
!
!
the upper LCD will
display the maximum recorded sensor 1
temperature and the lower LCD will display the
minimum recorded sensor 1 temperature (figure
4).
If 2 sensor input is selected, the upper LCD will
display the maximum recorded sensor 1
temperature(T1) and the lower LCD will display
the maximum recorded sensor 2
temperature(T2). Then press key to display
the minimum recorded temperature for both
sensor 1 and 2.
2. Press key once more to exit to normal
operating mode.
SET
SET
Steps
Step 6
Step 7
Step 8
Step 9
Procedures
SET
S2
Up Down
SET
dF2
Up Down
SET
H2
C2 Up Down
C2 H2
SET
Ac2 Up Down
SET
Press key again to access the stage 2 setpoint mode. The lower LCD will
display the current setpoint (flashing) and the upper LCD will display
annunciator. Then press either the key to increase or the key to
decrease the setpoint to the desired setting.
Press key again to access the stage 2 differential mode. The lower LCD will
display the current differential (blinking) and the upper LCD will display
annunciator. Then press either the key to increase or the key to
decrease the differential to the desired setting.
Press key again to access the stage 2 heating or cooling mode. The upper
LCD will display the current mode, with flashing annunciator, either for
heating or for cooling. Then press either the key or the key to toggle
between the or operation.
Press key again to access the stage 2 Anti-Short Cycle time delay. The
lower LCD will display the current time delay(blinking), in minute and the upper
LCD will display . Then press either the key to increase or the key
to decrease the delay to the desired setting. The increment is in 1 minute. Press
key again to go back to normal operating mode.
Description
Stage 2 Setpoint
Temperature
Stage 2 Differential
Temperature
Stage 2 Heating or Cooling
Stage 2 Anti-Short Cycle
time delay
Default setting is:
Default setting is:
Default setting is:
Default is: minutes
65F
1F
H2
0
LCD Display
65f
S2
8f2
If
H2
0
Ac2
Continue Programming Steps
Figure 4