Siddons Solarstream heat pump fault-code guide

The archived cover prints the MAHRW010ZB family with spaces around several tank suffixes. This catalogue normalises those spaces only where the remaining characters exactly match MAHRW010ZB-250SS, -250VEO, -315SS or -315VED in the registry. Copy whether the system has a stainless-steel or vitreous-enamel tank and preserve the final letters. Other Siddons models, including the SMBD and SMCD families and nearby VE variants, remain outside the table because neither capacity nor a similar bolt-on cabinet establishes the same MK4068 controller.

Sources: Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 1

The MK4068 owner manual uses a combined System Malfunction Schedule rather than separate owner and installer dictionaries. PP values cover temperature sensors and water flow, while EE values cover pressure, phase sequence and communication. The extracted page layout is column-heavy, which is why each published row retains a literal source span and two agreeing review hashes. Note the exact prefix as well as the number; PP1 and EE1 are different conditions. Internal thermistors, refrigerant switches, pumps and contactors are service components, not owner-adjustable controls.

Sources: Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 25

PDF page 25 yields eleven publishable faults: PP1 through PP7, EE1, EE2, EE4 and EE8. The same schedule labels EE3 not applicable, so it is excluded. It also lists unit defrosting status as normal operation, not a fault. The remaining rows include explicit causes or checks, which are presented as documented technician context rather than direct repair commands. Photograph every code, note whether water delivery changed, and leave pressure-switch, refrigerant, wiring and pump checks to a trained service person.

Sources: Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 25

Siddons Solarstream registry records span older integrated SMBD and SMCD products, several tank sizes and eleven MAHRW variants. The located document calls itself a bolt-on split-system manual and names only four exact tank combinations that appear in the dataset. The map therefore stops at those four. A shared MAHRW010ZB stem can describe a heat-pump module while the attached tank, control wiring or revision still differs. Owners of an unmapped suffix should use the plate and serial to seek the matching publication instead of substituting this schedule.

Sources: Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 1

The Australia-only warranty section records ten years for a qualifying stainless-steel tank, five years for a glass-enamel tank, three years for the bolt-on heat pump and parts, and one year for labour. Those periods begin from dispatch and include water-quality and installation conditions. They are preserved to help identify what the manufacturer published, not to imply that an old unit remains covered or that the former claim route is active. The former official domain did not provide a verifiable current service channel during this review.

Sources: Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 28 · Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 30

The strongest available public record is the publisher-identifiable owner manual held by a distributor archive. It supplies company identity, exact model scope, controller faults, technical responses and historical warranty terms. The original website printed in the document no longer yielded a stable current support or logo asset, so this guide marks support status as unknown. It also avoids extending the table to other brands or duplicate registry strings. An archived manual can establish what was documented for a named appliance without establishing present ownership, service availability or universal controller compatibility.

Sources: Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 1 · Siddons Solarstream Bolt-On Heat Pump Owner Manual MK4068-02B, PDF page 25