To protect against voltage peaks, an eliminator like # 1833000001 must be used. Warranty is not possible otherwise.
When ordering this item, also order the Core Charge (> "Quick Find"): # 622000149 When purchasing this item you will be charged € 40 deposit for the old unit, which will be refunded after you return the non-disassembled old unit within two (2) weeks to us in the box of the reconditioned one (at your expense)! 
