Resetting The Safety Pressure Limiter; Resetting The High Limit Safety Cut-Out; Motor Overload Relay; Maintenance And Cleaning - STIEBEL ELTRON accelera 220 e Operation And Installation Manual

INSTALLATION

Maintenance and cleaning

Fault Cause
The appliance An inadequate air flow
generates less across the evaporator
heat. may be a possible cause.
For explanations of the fault codes, See 7.1, "Fault codes", pg.
17.

14.2 Resetting the safety pressure limiter

The safety pressure limiter shuts down the compressor if the
pressure inside the refrigerant circuit exceeds the permissible
maximum value. The safety pressure limiter may also respond if
the appliance is operated above its permissible application limit
or the temperature controller of the heat pump fails to respond.
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1 Reset button for safety pressure limiter
2 Reset button for high limit safety cut-out
 After removing the cause of the fault, reset the safety pres- 
sure limiter by pressing the reset button.

14.3 Resetting the high limit safety cut-out

The high limit safety cut-out protects the appliance from over-
heating. The electric booster element switches off when the tank
water temperature exceeds 189±10 °F (87±5 °C).
Once the cause of the fault has been removed, press the reset
button of the high limit safety cut-out on the rod thermostat. To
do so, remove the appliance cover.

14.4 Motor overload relay

In the event of excessive thermal load of the compressor, the motor
overload relay switches the compressor off.
 Remove the cause. 
After a short cooling period, the motor overload relay will restart
the compressor automatically.
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Remedy
Check whether the fan is contam-
inated. Check whether the evapo-
rator is contaminated. Ensure that
supply and extract air flow are
unimpeded.
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15. Maintenance and cleaning
WARNING Electrocution
Prior to all work on the appliance, turn off all power to it.

15.1 Removing the appliance cover

 Undo the screw (Torx) that fastens the control panel and the 
appliance cover to the appliance.
 Push the control panel upwards. 
 Remove the control panel. 
 A lead connects the operating controls to the appliance ECB. 
If necessary, pull the plug from the back of the control panel
to fully remove the control panel.
 Carefully lift away the appliance lid and undo the ground 
wire that runs from the appliance control panel to the cover.
Note
Refi t the appliance cover after completing your work. See
15.10, "Fitting the appliance cover", pg. 29.
Accelera® 220-300 E | 27