Heating surface red-hot or deformed
Zhongde LYF2.0/300-0.7, composite boiler (oil-fired and exhaust gas)
Possible cause
Overheating, low water or scale
What to do
Manufacturer's manual, p. 93Stop and report; do not use the boiler until it is surveyed
See the assembly on the 3D model
Other Zhongde LYF2.0/300-0.7 faults
Water level below the lowest visible part of the gaugeFeed failure or level control faultBrown water in the gauge glass / primingOil or dirt in the boiler waterSafety valve does not lift at set pressureSticking or wrongly set valveCoke or smoke in the furnaceBurner out of adjustmentWater level gauge leaksLoose nuts or worn cock packing
From the manufacturer's manual “EM-3 ZHONGDE BOILER”. Check against the original on board before work.