ACV Prestige 24 Solo Installer's Handbook page 106

BLOCKAGE AND ERROR CODES
Codes Description of the fault
E82 Delta T protection blocking - Delta T too high
E83 Delta T protection Lock-out - Lock-out due to Delta T value.
E 85 Pump operation: warning - Appliance pump is running out of limits.
E 86 Pump hard fault: Pump Failure
E 87 External Limit Open: An external appliance limit has opened.
E88 Pump Blocking: Pump attempts to restart.
E 89 Incorrect Setting: A parameter setting is outside the settings range.
Firmware Mismatch: Control module and display fi rmware versions are incompat-
E 90
ible.
System Sensor Shorted: A short circuit has been detected in the system tempera-
E 91
ture sensor circuit
System Sensor Open: An open circuit has been detected in the system temperature
E 92
sensor circuit.
Outdoor Sensor Shorted: A short circuit has been detected in the outdoor tem-
E 93
perature sensor circuit.
E 94 Internal Display Fault: Display memory error
E 95 Supply Sensor Error: Supply sensor reading is invalid
Outdoor Sensor Open: An open circuit has been detected in the outdoor tempera-
E 96
ture sensor circuit.
E 97 Cascade Mismatch: Cascade confi guration has changed.
E 98 Cascade Bus Error: Communication with other appliances has been lost.
Controller Bus Error: Communication between appliance display and control
E 99
module has been lost.
1. Verify fl ow in the system.
2. Check pump for blockage and obstructions, unblock it as required. Replace if neccessary.
1. Verify fl ow in the system.
2. Check pump for blockage and obstructions, unblock it as required. Replace if neccessary.
Pump is running out of its limits. Check pump for blockage and obstructions, replace if neccessary
Pump Failure, check if pump PWM-feedback wire is properly connected, replace pump when neccessary
1. Correct condition which caused limit to open, then reset appliance.
2. The appliance needs to be reset once external limit closes.
Check pump for blockage and obstructions, unblock it as required. Replace if neccessary.
1. Review CH & DHW settings and correct as necessary.
2. The appliance will automatically reset once corrected.
One or several components are not compatible with the system. Replace mismatched component(s).
1. Check system temperature sensor and wiring for a short circuit.
2. If necessary replace the sensor, or the wire harness.
3. After fi xing the problem reset the appliance and resume normal operation.
1. Check system temperature sensor and wiring for an open circuit.
2. If necessary replace the sensor, or the wire harness.
3. After fi xing the problem reset the appliance and resume normal operation.
1. Check outdoor temperature sensor and wiring for a short circuit.
2. If necessary replace the sensor, or the wire harness.
3. After fi xing the problem reset the appliance and resume normal operation.
Turn unit off and on to resume normal operation.
1. Check wiring between display and control module.
2. If necessary replace the sensor, or the wire harness.
3. After fi xing the problem reset the appliance and resume normal operation.
1. Check outdoor temperature sensor and wiring for an open circuit.
2. If necessary replace the sensor, or the wire harness.
3. After fi xing the problem reset the appliance and resume normal operation.
1. Run autodetection if change was intentional, or else check wiring between appliances.
2. Appliance will automatically reset once repaired.
1. Check wiring between appliances.
2. Appliance will automatically reset once repaired.
1. Check wiring between components.
2. Appliance will automatically reset once repaired.
The Installer's Handbook - ACVMax: A1004308 - 660Y2900 - Volume 5 • B
Solution for the fault
EN
FR
NL
ES
IT
DE
PL
RU
en
5-5