5
IOM - HELIOS
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Troubleshooting
SELF-TEST PROCEDURE
1. Press the test button 4 consecutive times (4 short presses). This puts
the diffuser n self-test mode. The damper ring should move through a full
range of motion from (full open to full closed)
2. If there is no problem detected, the external led will be turn on and stay
on. The extension harness may now be disconnected.
3. If a problem is detected, the external led will blink in a pattern indicating
the type of error detected. Use the table below to troubleshoot possible
solutions.
BLINK
PATTERN ERROR DETAILS POSSIBLE CAUSES CORRECTIVE ACTION
1x
Solar current out of range
(light level measured at solar cell must be above
100 lux)
SOLAR CELL DEFECT CHECK THAT SOLAR CELL IS CONNECTED. REPLACE SOLAR CELL IF NECESSARY.
LIGHT LEVEL BELOW 100 LUX CHECK THAT LIGHT SOURCE IS ON AND SOLAR CELL IS OVER THE LIGHT. ADJUST LIGHT SOURCE TO 100 LUX IF NECESSARY.
BOARD DEFECT REPLACE CONTROL BOARD
2x
Motor timeout error
(increments prior to mechanical block exceed
limit)
MOTOR OR WIRING DEFECT CHECK THAT THE MOTOR IS CONNECTED. REPLACE MOTOR IF NECESSARY.
MECHANICAL DEFECT REPLACE MOTOR
BOARD DEFECT REPLACE CONTROL BOARD
3x Other motor errors
(no encoder increments detected)
MECHANICAL UNIT BLOCKED CHECK FOR OBSTRUCTIONS ON ACTUATOR
MOTOR DEFECT REPLACE MOTOR
BOARD DEFECT REPLACE CONTROL BOARD
4x
Temperature out of range
(<=5BC or >=50BC)
(<=41BF or >=122BF)
ROOM OR SUPPLY AIR
TEMPERATURE OUT OF RANGE
CHECK THAT ROOM TEMPERATURE SENSOR IS CONNECTED; CHECK THAT SUPPLY TEMPERATURE SENSOR IS NOT TOUCHING
DIFFUSER BACKPAN
SENSOR DEFECT REPLACE ROOM TEMPERATURE SENSOR; REPLACE CONTROL BOARD
BOARD DEFECT REPLACE CONTROL BOARD
Figure 12. Control Board Error Codes
