Takagi 110c Installation Manual And Owner's Manual

Takagi 110c Installation Manual And Owner's Manual Manual pdf 42 page image

42 Page-Fault Analysis of Error Codes-If the error code is displayed on the computer board of the water heater or remote controller, pleasecheck the following. After checking, consult with the manufacturer.TroubleshootingOwner's GuideRemote GreenLEDMalfunctiondescription Diagnosis031 One Flash Incorrect DIP switchsetting• Check the DIP switch settings on the PCB (Part #701).101 Five Flashes Warning for the “991”error code• Check the gas type of the water heater.• Check if there is any blockage in the intake air and/orexhaust.• Check to make sure that there is enough distance betweenthe concentric vent terminal and other exhaust ventterminals.• Check the altitude/elevation of area of where the waterheater is installed.• Check if there is grease and/or dirt in the burner (Part #101)and the fan motor (Part #103), especially if the water heaterhas been installed in a contaminated area.111* Three Flashes Ignition failure • Check if the Hi-limit switch (Part #412) is properlyfunctioning.• Check for connection/breakage of wires (Part #413, 708,709), burn marks on the computer board (Part #701), and/orsoot on the flame rod (Part #108).• Check if there is a buzzing spark ignition sound comingfrom the burner (Part #101) when the water heaterprepares for combustion.• Listen for the double “clunk” sound coming from the gasvalve assembly (Part #102) when the water heater goesinto combustion.• Check if there is leaking from heat exchanger (Part #401).121* Three Flashes Loss of flame • Check if the Hi-limit switch (Part #412) is functioningproperly.• Check for connection/breakage of wires (Part #413, 708,709), burn marks on the computer board (Part #701),and/or soot on the flame rod (Part #108).• Check if there is leaking from heat exchanger (Part #401).311* Two Flashes 110C & 310C:Outlet thermistorfailure510C:Heat exchangerthermistor failure • Check for connection/breakage of wires and/or debris onthermistor (Part #407, 408, 411, 713).321* Two Flashes Inlet thermistor failure331* Two Flashes Outlet thermistorfailure(510C model only)391 Two Flashes Air-fuel ratio rod failure • Check for connection/breakage of wires (Part #709) and/or soot on the AFR rod (Part #108).441 Two Flashes Flow sensor failure(Only Easy-Link &Multi-Unit System)• Check for connection/breakage of wires and/or debris onthe flow sensor impeller (Part #402).510 Six Flashes Abnormal main gassolenoid valve• Check for connection/breakage of wires (Part #708) and/or burn marks on the computer board (Part #701).551 Six Flashes Abnormal gassolenoid valve• Check for connection/breakage of wires (Part #708) and/or burn marks on the computer board (Part #701).611* Four Flashes Fan motor fault • Check for connection/breakage of wires, dust buildupin the fan motor (Part #103) and/or burn marks on thecomputer board (Part #701).• Check for frozen/corrosion of connectors (Part #103).