Anti-Frost Function - CHAFFOTEAUX AQUANEXT PLUS 200 Instructions D'utilisation

P19 parameter - Errors
This is a read-only parameter that shows the history of the last 10 errors; it is accessible only by the technical
assistance. The number (3 digits) indicates the occurred error code whilst the error number is represented in the lower
string in chronological order (max 10 errors - the number 10 indicates the most recent occurred error).

7.8 Anti-frost function

When the product is supplied with power and there is no hot water demand, if the water temperature in the tank goes
below 5°C, the heater coil (1000 W) is activated automatically to heat the water to 16°C. With P8=3 the function is
performed by the integrated circuit.
7.9 Defrost
The defrost function is activated when the heat pump has been working for at least 20 minutes, the
detected air temperature is below 15°C and the evaporator temperature is decreasing rapidly. When the
defrost cycle is running, the icon to the side is displayed.
7.10 Number of showers available
The icon to the side shows the estimated number of showers remaining, based on hot water availability.
One shower is calculated as: 40 L at 40°C. Press the knob to view the value.
7.11 Errors diagnostics
As soon as a fault occurs, the appliance enters into the fault mode while the display emits flashing signals and
visualises the error code. The water heater will continue supplying hot water provided the fault affects only one of two
the heating units, by activating the heat pump or heating element.
If the fault involves the heat pump, the symbol "HP" will flash on the screen, while the heating element symbol will
flash if the fault involves this component. If both components are affected, both symbols will flash.
If the product shows an error signal, switch the appliance off and then on with the ON/OFF button (without batteries); if
the error signal persists, contact the technical assistance.
CAUTION: Before intervening on the product by following the indications below, check the correct
electrical connection of the components to the mainboard and the correct position of the NTC sensors in
their seats.
Error
Cause
code
Air/Evaporator/Intake NTC
110 sensor; short circuit or open
circuit
Air/Evaporator/Intake NTC
111
sensor: decalibration
121 No coolant (R134a)
Compressor start capacitator:
131
KO
141 Fan: KO
142 Evaporator filter: obstruction
High pressure drop in air
143
ducts
Pressure switch:
151
decalibration
Heating element Heat pump
operation operation
Encoding of heat pump circuit codes
ON OFF Replace the component
ON OFF Replace the component
Recover the residual gas, find the leak in the cooling
ON OFF circuit and repair it; empty the cooling circuit and
recharge with 1300 grams of coolant
Replace the start capacitator
If the error persists, recover the residual gas and replace
ON OFF
the compressor; empty the cooling circuit and recharge
with 1300 grams of coolant
ON OFF Replace the component
Clean the evaporator filter and the air ducts
ON OFF
If the error persists, check compliance of the air duct
specifications
Check compliance of the air duct specifications
ON OFF
If the error persists, clean the evaporator filter and the
air ducts
Replace the component
OFF OFF
If the error persists, download 300 gr. of R134a
refrigerant gas from cooling circuit.
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What to do