Recirculated Or Fresh Air Mode; User Menu Settings; Set Temperature Unit (°C / °F); Adjust Display Back-Light - Webasto Cool Top 110 RT-C Instrucciones De Instalación Y Funcionamiento

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).
Press button "Recirculated air mode"
X
to switch between fresh air and re-
circulated air.
– Fresh air mode selected
– Recirculated air mode selected
4

User menu settings

The user can adjust the following settings
■ Temperature unit (°C / °F)
■ Display backlight
4.1 Set temperature unit (°C / °F)
+
Press both for 3 sec
X
Press until display shows "Tum"
X
or
Press "Auto mode" to enter
X
"Tum"
Press to switch between Celsius
X
or
and Fahrenheit
Press "Auto mode" to save selection
X
Press until display shows "out"
X
or
Press "Auto mode" to leave the user menu
X
4.2

Adjust display back-light

+
Press both for 3 sec
X
Press until display shows "Dim"
X
or
Press to enter "Dim"
X
Press to increase or decrease the display
X
or
back-light (0 - 10)
Press "Auto mode" to save selection
X
Press until display shows "out"
X
or
Press "Auto mode" to leave the user menu
X
Cool Top
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
Error
code
A/C
033 Empty refrigerant cir-
°C
cuit
SP
118 Short circuit on one
A
of the digital outputs
120 Water valve feedback Check water valve and its con-
A/C
°C
125 Short circuit with
SP
sensor
A
127 Short circuit with
sensor
129 Short circuit with
sensor
130 Short circuit with
sensor
132 Short circuit with
transducer
133 Short circuit with
transducer
143 Broken connection
with sensor
Set
145 Broken connection
with sensor
°C
147 Broken connection
Set
with sensor
148 Broken connection
°F
Set
with sensor
150 Broken connection
with transducer
151 Broken connection
with transducer
162 Battery overvoltage
163 Battery undervoltage Check battery. Power supply volt-
164 Transducers supply
(5 V) undervoltage
Set
167 Overcurrent fresh air
motor
168 Overcurrent water
valve
Tbl. 01: Error codes
Description Troubleshooting
Check refrigerant charge. Check
refrigerant leakage. Refill.
Check digital output and relays.
nections
Check NTC 2 Supply air tempera-
ture sensor
Check NTC 1 Internal tempera-
ture sensor
Check NTC 3 External tempera-
ture sensor
Check NTC 4 Internal auxiliary
temperature sensor
Check low pressure transducer
connection
Check high pressure transducer
connection
Check NTC 2 Supply air tempera-
ture sensor
Check NTC 1 Internal tempera-
ture sensor
Check NTC 3 External tempera-
ture sensor
Check NTC 4 Internal auxiliary
temperature sensor
Check low pressure transducer
connection
Check high pressure transducer
connection
Check battery. Power supply volt-
age above 16 V (12 V) or 32 V
(24 V).
age below 9 V (12 V) or 18 V
(24 V).
Check transducers supply line.
Power supply voltage below
4,95 V.
Check motor and its connections.
Current over 1.5 A
Check water valve and its con-
nections. Current over 1.5 A
A/C
!
A
5