Operation Manual
Zone Controller
Operation Manual LM-ZC-2 Wall Controller
Document No. 0525-082
Ver. 1 190918
Page 10
13. Troubleshooting
Condition
Causes or Check Points
The system does not start.
• Check that 5 minutes has passed from the time you turned the
system 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 high
enough 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), the
indoor fan will not operate.
Defrost cycle is indicated when
HEAT
is flashing on the Wall
Controller display.
OFF is displayed on my zone
controller and I cannot turn the
On.
• This means the Wall Controller is turned Off. First turn on your air
conditioner at the Wall Controller. You will now be able to turn on
your Zone Controller.
For any assistance with your ESP Ultima System, do not hesitate to contact our
Customer Care Team for technical support on free call number:
1800 119 229
