4B.8: Operating Principle; 4B.9: Fault Codes - Quantum 67ACW2-134 Owner's Manual

Quantum Energy Technologies
Owners Manual

4b.8: Operating Principle

st
At power on the compressor will start after the 10 min time delay (1 Level t10). When the water
temperature reaches 60°C the compressor will be de-activated. As the water temperature drops
st
below 52C (H60d08) and the compressor has not been in operation for at least 10 min (1 Level
P10), the compressor will be activated.
nd
During compressor operation, when the discharge temperature goes above 90°C (2 Level P90),
the liquid injection will be activated. When the compressor temperature (Axx) drops below 80°C
nd
(2 Level b80), the liquid injection will be de-activated.
nd
If the compressor temperature (Axx) goes above 98°C (2 Level H98), the compressor will be de-
activated and the error code E05 will be displayed. When the compressor temperature drops below
nd st
85°C (2 Level L85), and the compressor has not been in operation for at least 10 min (1 Level
d10), the compressor will be reactivated.
As the compressor temperature goes above 105°C, the compressor will be de-activated and the
error code E06 will be displayed. A manual reset is required.
Only if the temperature, measured by the evaporator sensor, is below 0°C will the de-icing
st
function operates. When the compressor has been operating for 45 min (1 Level F45) and the
evaporator temperature is 8°C's lower than the ambient temperature and this temperature
difference lasts for 5min, de-icing is activated. During the de-icing time, the fan stops. When the
nd
evaporator temperature rises to 8°C (2 Level F08) or the de-icing time has been more than 10
st
min (1 Level E10), de-icing is de-activated.
When the current draw is greater than the present value and lasts for 6 seconds, the compressor is
de activated and the error code E04 will be displayed, 10 minutes later the compressor will be re
activated. If the overload occurs again the system is de activated and the error cod E06 will be
displayed. A manual reset will be required or the power to the unit can be switched off and then on
again to reset the system.
NOTE: If there is no display in the screen after the power is supplied to the unit, it means the
phase order is not right. Swap the connections of any two line wirings.

4b.9: Fault Codes

E01 Water temperature sensor open or short circuit. Auto reset.
E02 Discharge temperature sensor open or short circuit. Auto reset.
E03 Evaporator temperature sensor open or short circuit. Auto reset.
E04 Compressor overload protection. Auto reset the first time, manual reset the second time.
E05 Compressor overheat protection (exceeding 98°C setting). reset.
E06 Compressor overheat protection (exceeding 105°C). Manual reset.
E07 Dual pressure& overheat relay protection. Auto reset.
E08 Ambient temperature sensor open or short circuit (Optional). Auto reset.
E09 Water Flow Switch. Auto reset.
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Document Number : QDC0049PD-5