9
Optima 155
4. Fault finding
The heat pump is equipped with the following safety
devices:
4.1 High pressure switch:
To prevent the compressor exceeding its range of
application, there is an integral high pressure switch,
which interrupts when the pressure becomes too high.
In case of interruptions (too high pressure) the red light in
the control panel will flash and the high pressure switch
will stop the heat pump. The red light lights. Restart
the equipment by manually resetting the high pressure
switch.
For RESET, remove the plastic stopper at the top and
press the red button.
4.2 Safety fuse for electrical water
heater
The safety breaker protects the equipment against
overheating during heating with the electrical heating
element. The safety breaker is mounted on the electricat
heat element. The sensor for the electrical heat element
is in the sub pipe of the electrical heat element. If the
adjusted value (90°C) is exceeded the heating coil will
disconnect. It can be reconnected when the temperature
is below 90°C. To do this, the power to the equipment
must be off. The reset button can now be pressed.
Please notice: Be careful not to damage or tear the
cables to the control.
4.3 The heat pump will not run
Please test if:
● power is connected?
● power is turned on at the wall plug?
● the temperature of the domestic water > 55° C
● the cable between controller and display is connected?
If this does not help locating the error, please contact
your local installer or service contractor.
