Trouble
shooting |
Possible causes:
- • Defective power supply for main controller.
- • Defective Pdis pressure transmitter.
- • Defective main controller.
Accompanied alarms:
- • There may be sensor alarms, especially AL 203.
- • AL 801 will be activated during FT- or PTI test.
Trouble shooting:
- Check if there are other active (sensor) alarms. Clear these alarms fi rst using their trouble shooting.
- Access the ”special menu” by pressing "spanner icon" for more than 3 sec. Scroll down until you see the label ”U Pdis” in the display. The value of ”U Pdis” should be in the range between 4.80 and 5.2V DC.
- While displaying “U Pdis”, remove the connector at Pdis. − If “U Pdis” is now inside the above range, the Pdis pressure transmitter is defective. Replace the Pdis pressure transmitter. − If “U Pdis” is still outside the above range, proceed to next step.
- While displaying “U Pdis”, disconnect Pdis from the terminals according to wiring schematics inside in the control cabinet. − If “U Pdis” is now inside the above range, the cable for Pdis is defective. Replace cable for Pdis. − If the correct voltage is measured at X22 then circuit is defective.
Replace the main controller. |
No comments :
Post a Comment