A D.C. Superior Court judge yesterday issued an arrest warrant for a Maryland roof repairman who violated a court order to return $934 that a Washington customer paid for roof work that was faulty and incomplete.

After an investigation by the city's Office of Consumer Protection, the roofer. John Hoffman, was ordered to reimburse the customer, and no pay the consumer protection office an additional $350 for the cost of its investigation, according to Assistant D.C. Corporation Counsel Richard G. Wise.

Hoffman operates the Northwest Roofing Company at 3600 Webster ST., Brentwood, Md., Wise said.

The city filed a lawsuit in February against Hoffman to try to enforce the payment order issued by the consumer office, Wise said. Then, a Superior Court judge ordered Hoffman to pay the sums and fined him an additional $2,000 in civil penalties.

Yesterday, when Hoffman failed to appear in court and still had not returned the money to the customer, Judge Robert A. Shuker issued a bench warrant for his arrest, Wise said.

In another consumer case, Superior Court Judge Norma Holloway Johnson Thursday told an auto repairman either to reimburse a customer $632.50 - for the value of a car - or go to jail for 60 days, Wise said.

Wise said that case arose over a dispute about the cost of repairs done on a 1966 Cadillac by John Newsome, who operates Newsome's Shell service station at 3426 18th St. NE.

When the customer refused to pay Newsome the money he demanded, Newsome moved the Cadillac off his property and onto the street, Wise said. Later, the Cadillac disappeared, and the D.C. police have not been able to find it, Wise said.