Blocking - REMEHA Gas 210 Ace 80 Installation And User Manual

10 Troubleshooting
10.1.3

Blocking

Tab.47 Blocking codes
Code Display text
H.00.16 DHW sensor Open
H.00.17 DHW sensor Closed
H.00.36 T 2nd Return Open
H.00.37 T 2nd Return Closed
H.01.00 Comm Error
H.01.06 Max Delta TH-TF
58
Description
Domestic Hot Water tank tempera­
ture sensor is either removed or
measures a temperature below
range
Domestic Hot Water tank tempera­
ture sensor is either shorted or
measures a temperature above
range
Second return temperature sensor is
either removed or measures a tem­
perature below range
Second return temperature sensor is
either shorted or measures a tem­
perature above range
Communication Error occured
Maximum difference between heat
exchanger temperature and flow
temperature
Solution
Domestic hot water temperature sensor open:
Sensor is not present
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Bad connection: check the wiring and connec­
tors
Faulty sensor: replace the sensor
Domestic hot water temperature sensor short-
circuited:
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Bad connection: check the wiring and connec­
tors
Faulty sensor: replace the sensor
Second return temperature sensor open:
Bad connection: check the wiring and connec­
tors.
Incorrectly fitted sensor: check that the sensor
has been correctly fitted.
Faulty sensor: replace the sensor.
Second return temperature sensor short-circuit­
ed:
Bad connection: check the wiring and connec­
tors.
Incorrectly fitted sensor: check that the sensor
has been correctly fitted.
Faulty sensor: replace the sensor.
Communication error with the security kernel:
Restart the boiler
Replace the CU-GH
Maximum difference between heat exchanger
and flow temperature exceeded:
No flow or insufficient flow:
Check the circulation (direction, pump,
valves).
Check the water pressure.
Check the cleanliness of the heat exchanger.
Check that the installation has been de-aired.
Check water quality according to supplier's
specifications.
Sensor error:
Check that the sensors are operating correct­
ly.
Check that the sensor has been fitted proper­
ly.
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