Mermaid REFRIGERATION/FREEZER Manuale Utente
(3) Run all applicable tests before assuming Module or Compressor to be faulty.
B: Compressor Not Running, No Start Attempt.
Probable cause
Action
1
Supply voltage too low
Check voltage with a digital multi-meter
at the terminals on the Module. This
must be 11.7v or more for a 12v supply
& 24v or more for a 24v supply. Inspect
power supply, ground connections &
components for integrity. Check wire
sizing. Charge batteries if necessary.
at the terminals on the Module. This
must be 11.7v or more for a 12v supply
& 24v or more for a 24v supply. Inspect
power supply, ground connections &
components for integrity. Check wire
sizing. Charge batteries if necessary.
2 Supply voltage too high
If a 12v supply is faulty & delivers over
17v, the compressor will not run. If it is
over 24v, it will assume that it is a 24v
supply & act accordingly.
17v, the compressor will not run. If it is
over 24v, it will assume that it is a 24v
supply & act accordingly.
3
Polarity incorrect
Check that the polarity is correct at the
Module.
Module.
4
Faulty thermostat
Remove the thermostat wires & jumper
the terminals that they were on together
temporarily. If the system then runs,
make the connection permanent &
control the system manually from the
breaker on your supply panel. Replace
thermostat as soon as possible.
the terminals that they were on together
temporarily. If the system then runs,
make the connection permanent &
control the system manually from the
breaker on your supply panel. Replace
thermostat as soon as possible.
5 Thermostat
wired
incorrectly, or faulty
connections.
connections.
Refer to the installation instructions &
confirm that connections are as they
should be. Ensure that the thermostat
connectors are pushed firmly on to the
Module terminals.
confirm that connections are as they
should be. Ensure that the thermostat
connectors are pushed firmly on to the
Module terminals.
6 Multi-speed
board
incorrectly installed (if
fitted)
fitted)
Check to make sure that the 2
connectors at the rear of the multi-speed
board are attached to the C & T
terminals of the Module.
connectors at the rear of the multi-speed
board are attached to the C & T
terminals of the Module.
7 Multi-speed
board
faulty
(if fitted)
** Optional Part **
** Optional Part **
Remove board & jumper terminals C &
T on the Module. Note; If the thermostat
wires are connected directly to C & T on
the Module, the compressor will run at
its slowest speed.
T on the Module. Note; If the thermostat
wires are connected directly to C & T on
the Module, the compressor will run at
its slowest speed.
8
Compressor plug not
Disconnect the Module by removing the