Rinnai E50C Installation & Servicing Instructions Manual page 69

Code Description
No signal from the fan
Negative pressure on vent
system (pressure difference)
internal shut down of supply
sensor T1
Shut down of return sensor T2
contact for supply sensor T1
open
Solution
The fan is not running. Check the wiring to the fan and the control unit and/
or the 24 volt power supply to the fan
Wiring and voltage are OK and error is repeated. Replace the fan
Check vent system. Vent system and air intake system must be installed
according installation instructions.
IF vent system is OK:
Replace fan
Check the data in Error mode. Boiler data during error:
1 Error = 31
2 Operational status = 00
3 Flow temp. = 230
4 Return temp. = xx*
5 kW burner = 00**
6 % pomp = xx*
* = variable values
**= x3415=BTU/hr
Check the wiring. check the wiring for the sensor
The wiring is OK but the error is repeated. Remove the plug from the fl ow
sensor as a result of which Error 36 occurs
Replace the sensor.
Check the data in Error mode. Boiler data during error:
1 Error = 32
2 Operational status = 00
3 Flow temp. = xx*
4 Return temp. = 230
5 kW burner = 00**
6 % pomp = xx*
* = variable values
**= x3415=BTU/hr
Check the wiring. check the wiring for the sensor
The wiring is OK but the error is repeated. Remove the plug from the fl ow
sensor as a result of which Error 37 occurs
Replace the sensor.
Check the data in Error mode. Boiler data during error:
1 Error = 36
2 Operational status = 00
3 Flow temp. = -22
4 Return temp. = xx*
5 kW burner = 00**
6 % pomp = xx*
* = variable values
**= x3415=BTU/hr
Check the wiring. check the wiring for the sensor
The wiring is OK but the error is repeated. Remove the plug from the fl ow
sensor as a result of which Error 31 occurs
Replace the sensor.
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