Bedienungsanleitung Webasto Cool Top 250 (Seite 5 von 38) (Deutsch, Englisch, Französisch, Italienisch, Spanisch)

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3.8 Recirculated or fresh air mode

Function is only available on systems with fresh air kit

installed.

Fresh air mode is optional. Contact Webasto.

Air is drawn in from the outside (fresh air mode) or recirculated in-

side (recirculated air mode).

XPress button “Recirculated air mode”

to switch between fresh air and re-

circulated air.

– Fresh air mode selected

°C

A/C

– Recirculated air mode selected °C

A/C

4 User menu settings

The user can adjust the following settings

■Temperature unit (°C / °F)

■Display backlight

4.1 Set temperature unit (°C / °F)

+ XPress both for 3 sec

Set

or XPress until display shows “Tum”

XPress “Auto mode” to enter

“Tum”

or XPress to switch between Celsius

and Fahrenheit

°C

Set

°F

Set

XPress “Auto mode” to save selection

or XPress until display shows “out”

XPress “Auto mode” to leave the user menu

4.2 Adjust display back-light

+ XPress both for 3 sec

Set

or XPress until display shows “Dim”

XPress to enter “Dim”

or XPress to increase or decrease the display

back-light (0 - 10)

XPress “Auto mode” to save selection

or XPress until display shows “out”

XPress “Auto mode” to leave the user menu

5 Error codes

If an error occurs then a warning code is visible

in the screen.

The warning symbol flashes for 3 seconds during

30 seconds

A/C

Error

code Description Troubleshooting

033 Empty refrigerant cir-

cuit

Check refrigerant charge. Check

refrigerant leakage. Reﬁll.

118 Short circuit on one

of the digital outputs

Check digital output and relays.

120 Water valve feedback Check water valve and its con-

nections

125 Short circuit with

sensor

Check NTC 2 Supply air tempera-

ture sensor

127 Short circuit with

sensor

Check NTC 1 Internal tempera-

ture sensor

129 Short circuit with

sensor

Check NTC3 External tempera-

ture sensor

130 Short circuit with

sensor

Check NTC4 Internal auxiliary

temperature sensor

132 Short circuit with

transducer

Check low pressure transducer

connection

133 Short circuit with

transducer

Check high pressure transducer

connection

143 Broken connection

with sensor

Check NTC2 Supply air tempera-

ture sensor

145 Broken connection

with sensor

Check NTC1 Internal tempera-

ture sensor

147 Broken connection

with sensor

Check NTC3 External tempera-

ture sensor

148 Broken connection

with sensor

Check NTC4 Internal auxiliary

temperature sensor

150 Broken connection

with transducer

Check low pressure transducer

connection

151 Broken connection

with transducer

Check high pressure transducer

connection

162 Battery overvoltage Check battery. Power supply volt-

age above 16V (12V) or 32V

(24V).

163 Battery undervoltage Check battery. Power supply volt-

age below 9V (12V) or 18V

(24V).

164 Transducers supply

(5V) undervoltage

Check transducers supply line.

Power supply voltage below

4,95V.

167 Overcurrent fresh air

motor

Check motor and its connections.

Current over 1.5A

168 Overcurrent water

valve

Check water valve and its con-

nections. Current over 1.5A

Tbl. 01: Error codes

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