Uline H-8771 Manual Del Usuario página 7

OPERATING ISSUE
Evaporator coil is
freezing.
99 flashes on display.
59 or lower temperature
flashes on display.
PAGE 7 OF 21
TROUBLESHOOTING CONTINUED
CAUSES
Low or restricted air flow
Undersized capacity, unit constantly
on, unable to achieve set point
Low return air temperature out of
factory specifications
Evaporator door open, mechanical
system malfunction
Ambient room temperature is
over 99º F.
Ambient room temperature is
under 59º F.
1-800-295-5510
uline.com
RECOMMENDATIONS
Direct supply return air to area of highest
heat load.
Check for blocked air flow from the
supply air.
Replace air filters.
Adjust set point to allow the unit to cycle.
Add another A/C system or larger
capacity model.
Install service gauges to view pressures.
Call Uline Customer Service at
1-800-295-5510 for assistance.
Unit is working properly. Lowering of room
temperature will rectify the flashing.
Limits of unit have been reached.
Operating temperatures are 65-105º F.
0920 IH-8771