ECOSAIRE EN Series, Owner'S Manual

Page: 99 / 142

Ecosaire
®
EN Series Precision Air Conditioner Owners Manual
95 Ecosaire ® July 2009
Data subject to change without notice.
Operation Controller Diagnostics
CHECKS
1. Check the temperature of the
supply air at the unit.
2. Check the resistance of the
sensor and sensor wires.
1. Check the temperature of the
return air at the unit.
2. Check the resistance of the
sensor and sensor wires.
1. Using a known good
psychrometer, check the humidity
of the return air at the unit.
2. Check the resistance of the
sensor and sensor wires.
CORRECTIONS
•
If controller does not agree with known good
thermometer, contact factory for corrective
measures.
•
If the cable continuity is correct but the sensor
resistance does not correspond to that shown in
the chart for the known temperature, the sensor
must be replaced.
•
If controller does not agree with known good
thermometer, contact factory for corrective
measures.
•
If the cable continuity is correct but the sensor
resistance does not correspond to that shown in
the chart for the known temperature, the sensor
must be replaced.
•
If the controller does not agree with a known
good psychrometer, contact factory for corrective
measures.
•
Compare the voltage to that shown on the chart
for this relative humidity. If the voltage is 0VDC
or 19VDC, replace the sensor.
*** ALARM ***
00:00 00/00
Discharge Temp
Sensor failure
*** ALARM ***
00:00 00/00
Room temperature
Sensor failure
*** ALARM ***
00:00 00/00
Room humidity
Sensor failure
OPERA
TION