Rinnai HE Series How To Use Manual page 181

NOTE: Before servicing fan motor turn off power supply to the unit. Never attempt to plug up or
unplug motor while power is supplied to product. Failure to follow this procedure could lead to
damaged components including fan motor.
1. Check wiring harness for loose, broken or damaged connections from fan motor back to PC
board.
2. Remove fan motor with power supply to product turned off. Inspect blower wheel to ensure it
turns freely.
3. Check fan housing for debris that could prevent the fan wheel from turning.
4. Measure fan motor winding resistance, see technical data sheet behind front cover or in service
manual for proper resistance readings. If windings are open replace motor.
5. If motor windings are within specifications and fan motor turns freely, replace PC board.
Code 61 Troubleshooting Procedure
Combustion fan Motor
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