By John Lee Grant | (WHAV News file photograph.) A proposal for repair work at Haverhill’s William H. Moody School remains in limbo today because of a possible misunderstanding between Haverhill school administrators and the Massachusetts School Building Authority. At the last School Committee meeting, Haverhill Facilities Director Stephen D. Dorrance said the 107-year-old building needs some preventive maintenance to its roof, windows and heating system in order to avoid problems in the future. He said those particular issues make it a good candidate for the state’s Accelerated Repair Program which would cover much of the cost. However, when Assistant School Superintendent Michael J. Pfifferling attempted to start an online application, it would not let him do so.