SSB
6720818454 (2016/02) US
Troubleshooting | 43
Error
Int . nr .
Description
Checks
Solutions
“Overheat Error”
70
Supply temp exceed the limit
a- Check the pump to verify
the flow circulation
b- Check if the valves on
hydraulic circuit are open
c- Check the supply
temperature sensor
a- Change the pump or restart it
b- Open the valves on hydraulic
circuit
c- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
"T Supply Open"
72
Supply sensor open
a- Check the integrity of the
wire connections
b- Check the supply
temperature sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"T Return Open"
73
Return sensor open
a- Check the integrity of the
wire connections
b- Check the return
temperature sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"T Dhw Out Open"
76
DHW sensor open
a- Check the integrity of the
wire connections
b- Check the DHW
temperature sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"T Supply Shorted"
80
Supply sensor shorted
a- Check the integrity of the
wire connections
b- Check the supply
temperature sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"T Return Shorted"
81
Return sensor shorted
a- Check the integrity of the
wire connections
b- Check the return
temperature sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"T Dhw Out Shorted"
84
DHW sensor shorted
a- Check the integrity of the
wire connections
b- Check the DHW
temperature sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"T Flue Shorted"
86
Flue sensor shorted
a- Check the integrity of the
wire connections
b- Check the flue temperature
sensor
a- If the wiring is damaged, replace
it
b- Verify that the temperature
sensor has the correct resistance
values. If values are incorrect
sensor must be replaced.
"Reset Button Error"
87
Reset button error
Too many reset button
pushes in a 60 sec period
"Appliance Selection"
93
Appliance selection error
Replace the power control board
"Gas Pressure Error"
107
Gas pressure too low or too high
"Flue Press Error"
108
Flue gas pressure error
a- Check for any obstruction
in the exhaust system
b- Check the condensate
discharge
a- Remove any obstructions from
the exhaust system
b- Remove any obstruction from
condensate discharge and verify if
the condensate can flow freely
Tab. 19 Blocking errors
Содержание Buderus SSB255
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