Myson 7-4 Installation, Operating, Maintenance And After Sales Manual

Also see for 10-6: Installation & maintenance manual

Contents

Myson 7-4 Installation, Operating, Maintenance And After Sales Manual Manual pdf 11 page image

11HI-LINE RC & HI-LINE RC Heater/Cooler12.0 Troubleshooting (continued...)Common Installation FaultsFor optimum performance, this unit must be correctly sized tomatch the heat loss requirements of the space it is required toheat, and the heating system must be correctly designed toprovide adequate flow of hot water to the unit (see Section 2).If the recommendations in Section 2 are not followed,problems may arise as detailed below.Heating Mode -No FanHeating Mode(Heater model only)poor heatingperformance and/orunit cycles onwater sensorPossible CausesUnit switched offTemperature set point reachedUnit not switched on at breaker panelBreaker tripped at panelUnit isolating valves shutWater temperature reaching fanconvector below 110°F(Heater model only)Problem RemedyLow water temperature to unit Turn up boiler thermostatPoor water flow Vent air from heating systemTurn onIncrease temperature set pointSwitch on at breakerCheck all wiring and reset breakerOpen valvesCheck boiler -Programmer ONBoiler ON and set to high with centralheating pump runningNote: Operation of fan convector can be checked byswitching to manual fan settingHeating Mode(Heater model only)poor heatingperformance and/orunit cycles onwater sensorPossible CausesBoiler thermostat set too lowLack of flow to fan convector -Pump set on low settingIsolating valves not fully openSystem incorrectly balanced with unit starved of hot water flowPipe sizing to unit too smallProblemPoor heating performance(Heater model only) Unit incorrectly sized for heat loss of room13.0 MaintenanceBefore undertaking any maintenance activity isolate theelectrical supply.Maintenance should be restricted to occasional removal of dustand lint around the unit. The outer surface may be wiped overwith warm water and mild detergent taking care to avoid waterentering the grille areas.If the fan convector is still faulty after checking the above, call your installer or MYSON.11.012.013.0

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