AERCO Modbus Communications Manual for ECS - Manual (Page 12)

AC-106 INSTRUCTIONS - ECS COMMUNICATIONS
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E r r 4 Error 4: Keyboard failure. Stuck
button or button was pressed
during power-up Switch power off and then on, without
touching any of the controller buttons
E r r 5 Error 5: Faulty internal
communication Check printed circuit board
interconnections. If the fault cannot be
cleared, return the controller for repair.
E r r 6 Digital filter chip faulty or loose
board inside controller Return Controller for repair
E r r 7 PV ID failure Return Controller for repair
E r r 8 Module 1 ID failure Faulty or loose module, or isolation
problem
E r r 9 Module 2 ID failure Faulty or loose module, or isolation
problem
Module 3 ID failure Faulty or loose module, or isolation
problem E r r A
DC output failure Return Controller for repair d C F
9. CLEARING HARDWARE ERROR (HW.ER) DISPLAY
To clear a Hardware Error and reset the Temperature Controller, proceed as follows:
1. Simultaneously press the Page ( ) and Scroll ( ) buttons on the Temperature Controller.
2. Using the Up (▲) arrow button, change the password to “8”.
3. Simultaneously press the Page ( ) and Scroll ( ) buttons again and observe the
Temperature Controller display. The top line will display “8” and the bottom line will display “NO”.
4. Press the Up (▲) arrow button to toggle the display from “NO” to “YES”.
5. Simultaneously press the Page ( ) and Scroll ( ) buttons to “Reset” the Temperature
Controller and clear the Hardware Error.