Oilon Geopro RE, Operation Manual

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RE010070948EN 18/23
4.2. Troubleshooting
Error message codes
No. Definition Sensor Cause Action
10 Outside sensor B9 No outside
sensor.
Check outside sensor
connection.
30 Flow sensor 1 B1 No measurement
from outgoing
water
Check L1 flow sensor
connection.
32
Flow sensor 2
B12 No measurement
from outgoing
water
Check L2 flow sensor
connection, additional.
33 Flow sensor HP B21 No measurement
from outgoing
water
Check HP sensor
connection.
35
Source inlet sensor
B91 No measurement
from source inlet
sensor
Check source inlet
sensor.
36
Hot-gas sensor
1 B81 No measurement
from hot gas
sensor
Check hot gas sensor
measurement connection.
40
Condenser difference
max.limit
Too high
temperature over
condenser
Check heating circuit
venting, increase pump
rotation speed.
41 Condenser difference
min.limit Too high
temperature over
condenser
Slow down pump rotation
speed.
42 Evaporator difference
max. limit Too large
temperature
difference over
evaporator
Check ground circuit
venting, increase pump
rotation speed.
43
Evaporator difference
min. limit
Too small
temperature
difference over
evaporator
Check compressor
operation.
106 Source temp too low Too low ground
circuit
temperature Vent ground circuit, check
that pump rotation speed
is at maximum.
107 Hot-gas compressor 1 Compressor hot
gas temperature
too high
Adjust maximum
temperature for outgoing
water lower.
222
High-press in HP
operation
E10 Compressor has
reached
maximum
pressure at
pressure side
Adjust maximum
temperature for outgoing
water lower
223
Hi-press on start HC
E10 Compressor has
reached
overpressure at
HC circuit start-
up
Check that condenser
pump is operational, and
fuse is not blown out.
224 Hi-press on start DHW E10 Compressor has
reached
overpressure at
DHW heating
start-up.