           
Email us:
sales@seafreezeinc.com |
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- Troubleshooting Your Unit -
If your unit is not cooling properly,
follow these steps to determine the cause. You will need a
multimeter to
complete some of the steps.
| 1. |
Is the
fan running? Feel for
airflow through the fan because any noise you hear could be
the compressor running.
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| 2. |
Is the compressor running?
Place your hand on top of the compressor. If the
system has been running for more than half an hour the
compressor
should be warm to the touch. You should also be able
to feel some vibration from the motor. |
If both compressor and fan are
running, your system is likely low on refrigerant. There is a
charging port located on the compressor unit. Please refer to
your manual for more information on charging and refrigerant.
If the compressor is running but the
fan is not, use a
multimeter to check for power going to the fan. For AC
systems, remove the cover of the wiring box attached to the
compressor and check for AC voltage between the fan wires. For
DC or AC/DC systems, check for 12V DC power between the fan
terminals on the exterior of the electronics module (also attached
to the compressor). If power is available, the fan needs replaced.
Otherwise the electronic module is probably defective.
| 3. |
Is the Electronic Fault Light blinking? Our DC and
AC/DC systems have
an LED light on the electronics module of the compressor. If
the module detects an error, this light will blink from 1 to
5 times to indicate the fault. If it is blinking,
look up the number of blinks in the Electronic Fault
Light reference.
|
| 4. |
DC Terminal Block |
Is there power to
the compressor? This diagnostic step requires a
multimeter.
For DC compressors, check for 12V or 24V DC power between
the positive and negative terminals on the compressor's
terminal block. For AC compressors, remove the cover
from the wiring module attached to the compressor and check
for AC voltage between the white and black wires on the
power cord.
If your DC unit has an auto-switching
AC/DC adapter, test the adapter's power sources as well.
Check for voltage between the adapter's DC input terminals.
This voltage should always be present. If you are
connected to AC power, check for power on the AC input
terminals as well.
If your system is not receiving power, it
will not operate. We recommend that a professional
electrician diagnose and correct the problem.
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| 5. |
Is the cold control (thermostat) working? To
test the cold control, use a multimeter set to the Ohms (Ω)
scale. Set the cold control to its coldest setting to
ensure it is "on". Disconnect the wires marked CC from
the terminal block (they are not polarity-sensitive; do not
worry about the colors). Test for continuity between
the two wires on the cold control. With the control
turned on, zero resistance (a closed circuit) is expected.
If the multimeter shows an open circuit, test the compressor
by installing a piece of insulated wire between the two CC
terminals. If the compressor starts when jumpered, the
cold control or its gray-jacketed lead wire may be
defective. |
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