Rotem AC-2000 PLUS, Руководство по установке

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AC-2000
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6 TROUBLESHOOTING GUIDE
Problem : Temperature Sensor does not operate
Solution :
1. Replace Temperature sensor or connect it to another terminal.
2. Test the Sensor: Disconnect the two wires of the temperature sensor and measure the
resistance.
a) For 25° C the resistance should be 30 Kohm. If the temperature is higher, the resistance
should be lower (for example at 42° C the resistance should be 15Kohm). If the temp is
less than 25°, the resistance should be higher than 30 Kohm (for example for 15° C the
resistance will be 45 Kohm).
b) If no resistance is measured (
∞) it could have been caused by a broken temperature
sensor wire.
Problem
: Humidity sensor does not operate
Solution :
1. Supply Voltage: Check the 12 VDC between the Humidity Red(+) and Black(-) terminal
(it should be 7.5 V at least).
2. Check output voltage of the sensor between Humidity White (+) and Black (-). Note that it
must be 0.5 ÷ 3.0 VDC (15% to 100% of RH).
a) If the voltage is 0 or more than 3V the sensor is probably bad.
b) If the voltage is right (for example 1.5V for 50%) and the AC-2000 displays the wrong
value, it could be that this channel is bad. Move the white wire to a different analog input,
define in Menu 94 (sensor layout) and check again.
3. Replace the Humidity Sensor (for RHS-10PL replace only the tip).
Problem
: Static pressure sensor does not operate
Solution :
1. Check that the internal static pressure is defined as 4 in Menu 94 (sensor layout).
2. Shut OFF all fans and close all curtains and inlets so that pressure is at 0. Go to Menu 35
(Analog Input Test) and see that the received value is 65 counts. If it is not at 65 counts,
calibrate the pressure sensor by the trimmer to 65.
3. Clean filters, and check that both tubes are not blocked.
Problem
: Digital Input or pulse does not operate
Solution :
1. Disconnect the wires from the input and check the 5V between the digital input and the
common terminal.
a) If there is no 5 V then probably the input has been damaged (The lightning protection
device shorted or the pull-up resistor burned out).
2. Go to Menu 34 and short the digital input of the common. Check if ‘0’ changes to ‘1’.
3. For the pulse input (water) use Menu 37 and check that the counter increase by one for
every short across the pulse terminal.
Problem
: Communication does not operate
Solution :
1. If Rx and Tx LEDs are permanently ON, switch the wires between the Rx and the Tx.
2. Check that all jumpers are in MUX position.
3. Check all house numbers. There should not be a house number defined as zero, or two
houses with same house number.
4. Check that all controllers have the same baud rate, and same as PC.
5. Connect only one controller to the network and check communication. A faulty RCLP can
cause the whole network to not communicate.
6. Replace the suspected faulty RCLP.
7. Sometimes the Opto-Coupler isolators in the communication adaptor could be damaged
from lightning and needs to be replaced.