Daikin ERQ Service Manual page 259

ESIE09-05
Drawings & Flow Charts
A
abnormal discharge pipe temperature .................190
abnormal power supply voltage ...........................168
actuation of high pressure switch .........................182
actuation of low pressure sensor .........................184
C
check for causes of drop in low pressure .............225
check for causes of rise in high pressure .............224
check for fan motor connector ..............................226
check operation ......................................................87
check operation not executed ..............................211
check work prior to turn power supply on ...............84
compressor motor lock .........................................186
cooling operation fan control ..................................25
D
display "under host computer integrate control" blinks
(repeats double blink) ...................................223
display "under host computer integrate control" blinks
(repeats single blink) .....................................220
display of sensor and address data .....................157
E
error of external protection device ........................165
excessive number of ahus ...................................215
F
failure of combination (between ahu pc board and fan
pc board) .......................................................176
failure of transmission (between ahu pc board and fan
pc board) .......................................................172
fan motor (m1f) lock, overload .............................167
freeze prevention ...................................................40
functional parts layout ............................................18
H
high pressure protection control .............................33
high voltage of capacitor in main inverter circuit ..206
I
inverter compressor abnormal .............................202
inverter current abnormal .....................................203
inverter protection control .......................................36
inverter start up error ............................................204
L
low pressure drop due to refrigerant shortage or
electronic expansion valve failure .................207
low pressure protection control ..............................34
M
malfunction of capacity determination device ......171
malfunction of discharge pipe thermistor (r2t) ......193
malfunction of high pressure sensor ....................198
malfunction of humidity sensor system ................179
malfunction of inverter radiating fin temperature
rise ................................................................201
Drawings & Flow Charts
malfunction of low pressure sensor ..................... 199
malfunction of moving part of electronic expansion
valve (20e) ................................................... 169
malfunction of moving part of electronic expansion
valve (y1e, y3e) ............................................ 188
malfunction of outdoor unit fan motor .................. 187
malfunction of system, refrigerant system address
undefined ..................................................... 217
malfunction of thermistor (r1t) for outdoor air ...... 192
malfunction of thermistor (r1t) for suction air ....... 177
malfunction of thermistor (r2t) for heat
exchanger .................................................... 174
malfunction of thermistor (r3t) for gas pipes ........ 175
malfunction of thermistor (r3t, r5t) for suction pipe
1, 2 ............................................................... 194
malfunction of thermistor (r4t) ............................. 197
malfunction of thermistor (r6t) ............................. 195
malfunction of thermistor (r7t) for outdoor unit liquid
pipe .............................................................. 196
malfunction of thermistor for discharge air .......... 178
malfunction of thermostat sensor in remote
controller ...................................................... 180
malfunction of transmission between ahus and
outdoor units ................................................ 212
malfunction of transmission between inverter and
control pc board ........................................... 205
malfunction of transmission between remote
controller and ahu ........................................ 214
method of replacing the inverter's power transistors
modules ........................................................ 235
O
operation lamp blinks .......................................... 218
operation mode ..................................................... 22
outdoor unit pc board layout .................................. 91
P
pc board defect ........................................... 166, 181
piping diagrams ................................................... 228
power supply insufficient or instantaneous failure 209
pressure sensor .................................................. 234
R
refrigerant circuit ................................................... 16
refrigerant overcharged ....................................... 191
remote controller self-diagnosis function ............. 158
remote controller service mode ........................... 156
S
self-diagnosis by wired remote controller ............ 155
setting of low noise operation and demand
operation ...................................................... 111
image of operation ........................................ 112
setting of refrigerant additional charging operation
check operation ............................................ 116
simplified remote controller ................................... 93
brc2c51 ........................................................... 93
system is not set yet ............................................ 216
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