Multifunction Power System Will Not Increase to Higher Speed

Knowledge Base: www.kb.vmacair.com Email: tech@vmacair.com Web: www.vmacair.com Technical Support: 1(888)241-2289 Toll Free:1(800)738-8622 Fax: 1(877)740-3201 Technical Support Subject RAPTAIR-MF Will Not Increase to Higher Speed Document Version Department Revision Details Revised by Tech Engineering Implemented EXT-MF-016 A Tech Document Release SP 14 Sept 2015 DB 14 Sept 2015 N/A 17 Sept 2015 Page 1 of 1 System or Parts affected RAPTAIR-MF  D600005  D600007 Symptom RAPTAIR-MF Engine only running on low rpm speed. Will not rev up to high rpm speed. Resolution This issue is generally caused by a short in the wiring going to the throttle relay. This relay is located next to the radiator and is subject to abrasion due to vibration. (Figure 1) Figure 1 Check harness for exposed wires or shorts. Example: (Figure 2) Figure 2 Back of Control Box Radiator Check for exposed wires and/or electrical shorts Note insulation worn through Note insulation is worn through