20
Air-to-Water Heat Pump Owner’s Manual
Owner's instruction
On critical error, the product will be unconditional stop.
At this time, CH' and error code No. keep display by turns.
Critical error
<Display>
a problem is found inside the outdoor unit. As the outdoor unit has problem, the
emergency mode operation is performed by electric heater located in the indoor unit.
Heavy trouble
A problem is found inside the indoor unit. In most case, this trouble is concerned with
sensor problems. The outdoor unit is operating under emergency mode operation
condition which is configured by DIP switch No. 4 of the indoor unit PCB.
<Display>
Slight trouble
<Display>
When the error is occurred on indoor unit, the error code will be displayed on control panel.
Error code display
