Daikin EHYHBH05AAV3 Service Manual page 3

ESIE13-02A
3 Outdoor Unit
Part 3
Commissioning
Part 4
Troubleshooting
1 Troubleshooting
2 Error Codes: Gas Condensing Boiler
3 Error Codes: Hydro-box
3.1 Nominal Capacity and Nominal Input...........................................................
3.2 Technical Specifications ..............................................................................
1.1 General Troubleshooting Flowchart .............................................................
1.2 Overview of General Problems ....................................................................
1.3 Fault-diagnosis by Remote Controller..........................................................
1.4 Fault-diagnosis Manual Reset in the Memory..............................................
1.5 Troubleshooting by LED on the Hydro-box PCB .........................................
1.6 Overview of Error Codes..............................................................................
1.7 Overview of the Outdoor Safety Devices .....................................................
1.8 Overview of the Hydro-box Safety Devices .................................................
2.1 General Guidelines ......................................................................................
2.2 Solving Problems Based on Symptoms.......................................................
2.3 Solving Problems Based on Error Codes ....................................................
2.4 Symptoms ....................................................................................................
“A1” Malfunctioning Hydro-box PCB .............................................................
3.1
“ 89 ” Water Heat Exchanger Frozen .............................................................
3.2
“CJ, C4, 81, 80, HC, H1” Thermistor or Related Abnormality (Hydro-box) ..........
3.3
“7H” Hydro-box: Flow Error...........................................................................
3.4
“C0” Hydro-box: Flow Sensor Failure ........................................................... 100
3.5
“EC” Hydro-box: Domestic Hot Water Tank Temperature too High (> 89°C) 101
3.6
Warning “AH” Tank Disinfection Function Not Completed Correctly ............ 102
3.7
3
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5
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Table of Contents