Chapter 11
Troubleshooting Guide
For the interactive online Troubleshooting Guide go to:
http://veco-na.com/images/Frigoboat_BD35_and_BD50_Troubleshooting_Guide.pdf
Note
(1)
Do not inject anything but unadulterated pure refrigerant R134a into any Frigoboat system.
The addition of even a small amount of leak detecting fluid, leak sealer, extra refrigerant oil,
“conditioner”, flushing fluid, Thawzone, or other substances may cause irreversible damage.
(2)
Always disconnect power supply by turning off the breaker or removing the fuse before
working on electrical components or connections.
(3) Never operate a Keel Cooled or pumped-water cooled compressor when the boat is out of the water
without having rigged temporary water cooling or installing an Air Add-On air cooled condenser.
Failure to do so may cause irreversible damage.
(4) Voltage must be checked at the power terminals on the controller, with the supply wires attached.
(5) Always apply a suitable load when testing the output of electronic components such as a Voltage
Divider, as open-terminal conditions will vary greatly from the designed output.
(6) Start-up may occur up to one minute after power is supplied and thermostat is on. This will also occur
after a fault condition has been cleared.
(7) Run
all
applicable tests before assuming controller or compressor to be faulty. Controller can be
removed by unscrewing the retaining screw or by levering the plastic case over the screw head.
11:1
Compressor not running, no start attempt
Probable cause
Action
1
Supply voltage too low
Check voltage with a multi-meter at the terminals on the
controller. This must be 11.7v or more for a 12v supply,
(24.2v at 24v) for compressor to start. Inspect power supply,
ground connections and components for integrity. Check wire
sizing. Charge batteries, if necessary.
2
Supply voltage too high
If a 12v supply is faulty and delivers over 17v, the
compressor will not run. If it is over 24v, it will assume that
it is a 24v supply and act accordingly.
3
Polarity incorrect
Check that the polarity is correct at the controller.
4
Faulty thermostat
Remove the thermostat wires and bridge the “C” and “T”
terminals. If the system then runs, make the connection
permanent and control the system manually from the breaker
on your supply panel. Replace thermostat as soon as possible.
5
Thermostat wired incorrectly, or
faulty connections
Refer to the installation instructions to confirm that
connections are as they should be. Ensure that the thermostat
connectors are pushed firmly on to the terminals on the
Controller. Pull wires to confirm integrity.
6
Speed board or
Merlin II
incorrectly installed (if fitted)
Check to make sure that the connectors at the rear of the
Speed Board or
Merlin II
are mated correctly to the C, P, T and
D (or D/I) terminals of the controller.
