• L01 CLIMATE CONTROL NOT WORKING / UNDER NO CIRCUMSTANCES
• L02 CLIMATE CONTROL NOT WORKING / (NO AIR DELIVERY)
• L03 CLIMATE CONTROL AIR FLOW IRREGULAR
• L04 FAN' WILL NOT WORK AT DIFFERENT SPEEDS'
• L10 CLIMATE CONTROL NOT COOLING
• L11 CLIMATE CONTROL WORKING IRREGULARLY
• L12 CLIMATE CONTROL TOO COLD
• L15 CLIMATE CONTROL NOT HEATING
• L16 CLIMATE CONTROL RECIRCULATION NOT WORKING
• L30 SUPPLEMENTARY HEATER WILL NOT COME ON
• L31 BOILER OVERHEATING
• L32 EXCESSIVE SMOKINESS' AT EXHAUST TERMINAL
• L50 HEATER NOT WORKING / UNDER NO CIRCUMSTANCES
• L56 HEATER RECIRCULATION NOT WORKING