Diagnosing (Troubleshooting) - Bosch WTVC SERIES Repair Instruction

5.3

Diagnosing (troubleshooting)

Problem
Dryer won't run Power not on or has been disconnected.
Door switch misaligned & doesn't get activated by door pin.
Door pin broken, so door switch doesn't get activated.
Control module failed.
Door switch or wire harness failed.
Burner won't work Motor overheated.
Broken belt switch tripped.
Motor control or motor failed.
Lint screen hi-limit (thermal cutout) tripped.
Gas valve failed.
Heater hi-limit (thermal cutout) tripped.
Wire harness failed.
Motor won't work Motor overheated.
Broken belt switch tripped.
Motor control or motor failed.
Lint screen hi-limit (thermal cutout) tripped.
Wire harness failed.
702_58300000143767_ara_en_a
Possible Causes Suggested Repairs
Reconnect and turn on power.
Tighten screw (where door pin engages door switch) to realign front shield with door. Do
not overtighten screw.
Replace entire door.
Check control module output voltages. Replace module if faulty.
Check door switch & wire harness resistances. Replace faulty part.
Wait for motor to cool down and thermal protector to reset.
Reset broken belt switch.
Check motor control voltage & motor resistance. Replace faulty part.
Clean lint screen and clean lint and other debris from front shield, then replace hi-limit. Also
check exhaust duct length & # of elbows.
Check voltages to and resistances of parts. Replace faulty parts.
Correct what caused overheating, then reset hi-limit.
Run resistance or continuity checks to track down broken wire or connector. Replace failed
wire harness.
Wait for motor to cool down and thermal protector to reset.
Reset broken belt switch.
Check motor control voltage & motor resistance. Replace faulty part.
Clean lint screen and clean lint and other debris from front shield, then replace hi-limit. Also
check exhaust duct length & # of elbows.
Run resistance or continuity checks to track down broken wire or connector. Replace failed
wire harness.
Page 26 of 33