450
Eberspacher Espar Hydronic S3 D5E CS Control Unit ECU 12V Genuine Eberspacher warranted replacement part Eberspacher D5E Hydronic CS Version only Technical support and additional products available from Butler Technik Suitable for the following Eberspacher Hydronic Heater 252993050000 D5E 12V CS Applicable fault codes that could require replacement ECU. P000120 (064) - Flame sensor interruption* P000121 (065) - Short circuit in flame sensor* P000301 (090) - Control box defective P000302 (090) - Control box defective P000304 (091) - Control box defective P000305 (096) - Control box defective P000306 (098) - Control box defective P000330 (092) - Control box defective P000331 (093) - Control box defective P000332 (099) - Control box defective *Fault indicates multiple components should be tested prior to ECU replacement.