User Manual

9
TROUBLESHOOTING
If the unit appears to be malfunctioning, read through the
OPERATION section of this manual first. If the problem persists,
check this troubleshooting section to see if you can refer to
the cause and remedy of the problem and resolve it without a
service call.
DANGER
Never attempt to repair or perform maintenance on the
unit until the main electrical power to the unit has been
disconnected!
Problem Cause Solution
No interior light Bulb is loose • Tighten bulb
Bulb is burnt out • Replace bulb
LED board is inoperable • Contact Hestan Technical Service at
888-905-7463
Light stays on when door switch is closed Manual switch is on •
Door is not making contact with the door
switch
• Make sure the door closes tightly
Noisy operation Soft sounds from compressor, fan motor and
valves heard
• Normal operation
“Crackling” sound during defrost • Normal operation
Thermostat probe has failed • Contact Hestan Technical Service at
888-905-7463
Evaporator probe has failed • Contact Hestan Technical Service at
888-905-7463
Internal compartment has exceeded the high
temperature alarm preset value for over 30
minutes.
• Make sure the door is completely closed.
• Check the door gasket seal. Replace if
necessary.
• Check the condenser and clean it if
necessary.
• Make sure the louvered plate is
unobstructed. If surrounding ambient
temperature has recently changed
dramatically, the compartment may be
affected
•
• Warm product was recently placed in the
cabinet. Wait 24 hours for the product to
chill and then recheck the temperature.
Internal compartment has exceeded the low
temperature alarm preset value for over 30
minutes.
• Make sure the door is completely closed.
• Check the door gasket seal. Replace if
necessary.
• If the surrounding ambient temperature
has recently changed dramatically, the
compartment temperature may be
affected
Unit is not running No power is going to the unit. • Home circuit breaker was tripped. Reset
the circuit breaker.
•
• If it is a Dual-Zone model, check the Dual-
Zone master power switch (see page 4).
Condenser is dirt
y. • Clean the condenser
HESTAN OUTDOOR REFRIGERATION USE AND CARE MANUAL
hestanhome.com
LED Controller display is flashing “LA”
ON/OFF keypad is turned off. Turn it on.
Make sure the interior light is off.
Turn manual switch off
LED Controller display is flashing “HA”
LED Controller display is flashing “P2”
LED Controller display is flashing “P1”