Valeo spheros thermo 230 Workshop Manual page 28

Thermo 230 / 231 / 300 / 301 / 350
5.3.2.8 Fault Symptom "Temperature Limiter
Defective"
Is electrical power supply
to components o.k.?
Has temperature limiter responded
(reset limiter)?
YES
Determine why temperature limiter has responded,
e.g.:
• check shut-off elements,
• check water circulation in system is free from
bubbles,
• check circulation pump sense of rotation,
• check coolant low temperature resistance.
Can no fault be detected?
Replace temperature limiter.
If symptom shows again after testing:
control unit defective, replace.
NO
Make electrical connections.
Control unit defective, replace.
5 Troubleshooting
508