509
REVO-E Heat pump 5 Troubleshooting
5.6 Inspecting functionality of individual
components
The inspection of individual components may take the
form of a visual inspection or manual electric inspection.
In addition, electrical components can be inspected using
the DCT components test. A compilation of these can be
found in Table 503.
Details can be found in “OI REVO-E Diagnostics“ Chap.
3.5 Diagnosis Control Test.
1)
When switching off compressor, error F18 will be
marked for 1 min.
2)
Adjustment forces system into low pressure range
until shut off.
3)
Adjustment forces system into high pressure range
until shut off.
5.6.1 General visual inspection
– Inspect components for damage (cracks, deforma-
tion, seal, discoloration, etc.) and replace, as needed.
– Inspect plugs and lines for corrosion, (loss of) contact,
crimping errors, etc. and repair, as needed.
– Inspect plug contacts for corrosion and proper seat-
ing, repair as needed.
– Visually examine all electric lines (high and low volt-
age) for abrasion
5.7 Diagnosing the REVO-E units using
the Diagnosis Control Test – DCT
diagnostic software
Information about this can be found in the operating
instructions “OI REVO-E Diagnostics“, Chap. 4.
5.8 Diagnosing the frequency converter
Information about this can be found in the operating
instructions “OI REVO-E Diagnostics“, Chap, 5 / Attach-
ment EPA instructions for searching for errors.
Table 503
Components
Measured
values
Measurement steps
Axial fans Speed 0%/ 50%/ 80%/ 100%
Double radial
blowers
Speed 0%/ 50%/ 80%/ 100%
Compressor
1)
Speed 32%/ 50%/ 100%
Solenoid valve Position Open / closed
Low pressure
switch
1), 2)
Position Switched off
High pressure
switch
1), 3)
Position Switched off
Position of air
valves
Position Fresh air / recirculat-
ing air
4-way reversing
valve
Position Heat Pump / Cooling
Valve de-icing Position Open / closed
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