Troubleshooting - STIEBEL ELTRON ACCELERA 300 Operating And Installation

INSTALLATION
MAINTENANCE AND CLEANING
The safety high pressure limiter shuts down the compressor if
the pressure inside the refrigerant circuit exceeds the permissible
maximum value. The safety high pressure limiter may also trip if
the water heater is operated above its permissible limit, i.e. above
an air temperature of 42 °C (107 °F). (See above)
The safety pressure limiter also trips if the heat pump thermostat
fails.
» After the cause of the fault has been removed, reset the
safety pressure limiter by pressing the reset button.
15.1.3 Protective motor switch - klixon
The protective motor switch will shut down the compressor if it is
overloaded because of excessive thermal load. Remove the cause.
After a short cool-down phase, the protective motor switch will
restart the compressor automatically.

15.2 Troubleshooting

15.2.1 Excessive power consumption
» Lower the temperature of the booster heater.
15.2.2 The room temperature falls excessively
One possible cause is an inadequate air flow over the evaporator.
» Check the fan.
» Check for clogged evaporator.
» Ensure that the intake and discharge flow are not restricted.
16. Maintenance and cleaning
Only qualified licensed installers must carry out maintenance work
in accordance with these instructions.
WARNING Electric shock
Maintenance work, such as checking the electrical
safety, must only be carried out by an electrician.
Always disconnect the power supply before working
on the water heater.
You may remove the air intake grill if there is not
enough room for maintenance work above the
appliance even after its cover has been removed.
The air intake grill is secured with spring nuts. The inside of
the grill intake features an adhesive sealing strip.
» Never remove the sealing strip.
» Always use the spring nuts during reassembly.
» Refit the air intake grill after completing the maintenance
and repair work.
WWW.STIEBEL-ELTRON-USA.COM
1 Removable air intake grill with an all-around adhesive strip
on the inside.
ACCELERA® 300 HEAT PUMP WATER HEATER | 23