76
Temperature sensors type Pt 1000
1600
1500
1400
1300
1200
1100
1000
900
800
Ohm
Temperature in °C
-50
0
50
100
150
Fig.63
Note
All sensors can be checked via the temperature
displays in the program. If a sensor still needs to
be tested directly, one of the 2 sensor connections
must be separated from the controller. Otherwise
the measuring device will indicate false values or
can sustain damage.
Checking MCBs/fuses
MCBs/fuses in the front wiring chamber
■
Power circuit MCB/fuse, compressor 1 and 2 (see
separate "Connection and wiring diagram" sheet 2/3)
Subject to heat pump/compressor output, see chap-
ter "Specification"
■
Power circuit MCB/fuse, system components (see
separate "Connection and wiring diagram")
Danger
Contact with 'live' components can lead to seri-
ous injury from electric current.
Before working on the appliance, ensure that
the power circuit is at zero volt
.
Removing fuses/MCBs does
not switch the
power circuit to zero volt
.
Appliance too noisy
Possible causes:
■
Transport bracket not removed
■
Doors at the front not properly closed (turn quadrant
key as far as it will go).
■
Hydraulic line touches the heat pump casing.
■
Hydraulic line not connected free of load and torque
stress
■
Anti-vibration elements for Victaulic couplings miss-
ing.
Troubleshooting
Repairs
(cont.)
5549 991 GB
Service
Summary of Contents for 301.BS090
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