Operation Manual Zone ControllerOperation Manual LM-ZC-2 Wall ControllerDocument No. 0525-082 Ver. 1 190918Page 1013. TroubleshootingCondition Causes or Check PointsThe system does not start. • Check that 5 minutes has passed from the time you turned thesystem on, as the system has in-built safety timers.• Check thermostat settings are correct.• Check the thermostat Setpoint is set low enough for cooling or highenough for heating.• Check that the Wall Controller is set to correct mode for COOL /AUTO / HEAT.Air does not flow. (Indoor Unit) • Check if the unit is set in the correct mode COOL / AUTO / HEAT.• Check your Zone Controller is turned On. If using zone sensor,ensure your zone is turned On at the Wall Controller.• During defrost cycle of the outdoor unit (in HEAT mode), theindoor fan will not operate.Defrost cycle is indicated when HEAT is flashing on the WallController display.OFF is displayed on my zonecontroller and I cannot turn theOn.• This means the Wall Controller is turned Off. First turn on your airconditioner at the Wall Controller. You will now be able to turn onyour Zone Controller.For any assistance with your ESP Ultima System, do not hesitate to contact ourCustomer Care Team for technical support on free call number:1800 119 229