Carel SD - Page 26

Installation & Maintenance Manual
26
E11 HIGH HUMIDITY: (In CDD models only)
Causes:
1. Humidity has exceeded the high limit alarm setpoint.
Remedies:
1. Check control circuit.
2. Check calibration of humidity sensor.
3. Raise hi-limit setpoint.
E12 LOW HUMIDITY: (In CDD & CDH models only)
Causes:
1. Humidity has fallen below the low limit alarm setpoint.
Remedies:
1. Check control circuit.
2. Check calibration of humidity sensor.
3. Reduce lo-limit setpoint.
E13 FAULTY DRAINAGE: When the drain valve remains open for 20 minutes without lowering water level.
Causes:
1. Drain valve blocked.
2. Drain screen blocked.
Remedies:
1. Check drain valve.
2. Clean drain screen.
E14 CONVERSION ERROR: When the input from probes, amperage transformer or conductivity probes is out of
range.
Causes:
1. Amperage transformer disconnected or faulty or jumper not set right.
2. Incorrect DIP switch settings.
3. Humidity sensor or DDC signal values out of range.
Remedies:
1. Check wire connections. Check jumper on TAM transformer.
2. Check DIP switch settings.
3. Check sensor or DDC signal.
E31 SENSOR FAILURE: (Only on CDP/CDH/CDD models) When the input signal from the sensor or control signal is
out of range.
Causes:
1. Improper wiring connection of sensor.
2. Improper DIP switch settings.
3. Faulty sensor.
Remedies:
1. Check wiring of sensor.
2. Check DIP switch settings.
3. Check sensor input signal, replace.
4. Check polarity of sensor/stat signal.
E32 SELF-TEST FAILURE:
Causes:
1. Faulty hardware.
2. Faulty EPROM.
Remedies:
1-2. Turn off unit and call our local factory representative.