ECOSAIRE EN Series, Owner'S Manual

Page: 95 / 142

Ecosaire
®
EN Series Precision Air Conditioner Owners Manual
90 Ecosaire ® July 2009
Data subject to change without notice.
Operation Controller Diagnostics
*** ALARM ***
00:00 00/00
Change Air Filters
*** ALARM ***
00:00 00/00
Loss of Airflow
Check Fan
*** ALARM ***
00:00 00/00
Compressor 1
High Pressure
CHECKS
1. Be sure that the airflow was cor-
rectly adjusted at installation.
2. Check filters
3. Check blower operation
4. Check blower motor operation
Operate motor contactor
Measure contactor terminal
voltage
Check blower fuses
5. Check controller output
6. Check external duct dampers
(by others)
7. Check that diffusers are open
8. Check airflow sensor and con-
nections
1. Check that remote condenser (if
any) operates on controller
demand.
2. Check that remote condenser (if
any) has adequate clearance
from air obstructions.
3. Check that remote condenser (if
any) has sufficient flow of air and
that the air is less than 105°F.
4. For water-cooled units, check that
water is flowing and of proper
temperature.
5. Check that all refrigerant isolation
valves are open.
CORRECTIONS
•
Consult air balancing records. Correct as
necessary.
•
Filters must be kept clean. Replace as necessary
•
Blowers must turn in proper direction.
•
Reset motor overloads.
•
Correct as necessary.
•
Replace as necessary.
•
Check by wiring diagram.
•
Open as necessary for proper airflow.
•
Open as necessary.
•
Be sure all tubes and wires are connected.
•
Re-adjust set point if necessary. Consult factory
for method.
•
Check remote control wires for continuity. The
voltage between C8 and NO8 should be zero in
cooling mode and 24VAC at other times.
•
See Installation - Unpacking and Locating -
Outdoor Heat Exchanger .
•
Check for leaves or trash obstructing airflow. Be
sure condenser is located in an area that will not
cause re-circulation of heated air through the
condenser.
•
Water temperature and flow rate should be as
specified in the installation guidelines.
•
Open as necessary.
OPERA
TION