- 13 -
fan running
but
condensing
unit not
running
b. Failed
components
c. Low
refrigerant
b. Check start relay, start capacitor,
overload protector, compressor.
c. Call
service
13.Evaporator
freezing up
a. Evaporator air flow restriction
b. Condenser air flow restriction
c. Not stopping due to air leak, high
ambient temperature or low
temperature setting
d. Defective controller or probe
e. Low ambient temperature
f. Initially working then stopping,
moisture in the system
g. Refrigerant low or leaking
h. Expansion valve blockage
a. Check for fans and CFM
b. Check for fans and CFM
c. Check for seal, door opening,
ambient temperature and
temperature setting
d. Check for controller and probe
e. Change defrost cycle
f. Call
service
g. Call service
h. Call service
14.Water leak
a. Air leak in the wine cellar
(excessive condensate on the
front of the cooling unit)
b. High humidity
c. Evaporator air flow restriction or
low refrigerant
d. Water passages restricted
e. Drip tray leak (No water overflow
but water leak)
a. Check for any air leak
b. Use drain line
c. Check supply air flow or air TD
crossing evaporator
d. Clean the drip tray
e. Seal the leak using silicone sealant
15.Condensate
inside ducts
a. Drain line restricted
b. Continually running not stopping
c. Too cold supply air
a. Check for drain
b.
raise temperature setting or
increase defrost cycle
c.
Increase air flow or raise
temperature setting
16.Condensate
outside
ducts
a. Duct not insulated
b. High humidity
c. Too cold supply
a. Check for insulation
b. Use
dehumidifier
c.
Increase air flow or raise
temperature setting
17.Circuit
tripping
a. Incorrect fuse or breaker
b. Incorrect
wirings
c. Failed
components
a. Check for proper fuse or breaker
b. Check for wirings and connections
c. Call service
18.Noisy
operation
a. Mounting area not firm
b. Loose
parts
c. Compressor overloaded due to
high ambient temperatures or
airflow restriction
d. Defective
components
a. Add support to improve installation
b.
Check fan blades, bearings,
washers, tubing contact and loose
screws.
c. Check for airflow
d. Call service for checking internal
loose, inadequate lubrication and
incorrect wirings
