Hitachi UTOPIA RAS-4HVRP2E - Page 190

9 Servicing
RAS-(4-6)H(V)(R/N)(C/P)2E
SMGB0136 rev.0 - 07/2021
188
5 Pull up the electrical box -A- or -B- through the upper support -2- until it is free and can be removed from the front.
1
2
1
2
A
B
6 Disassembly the valve coils according to the items.
- “9.3.9Removing4-wayvalvecoil”
- “9.3.10Removingelectronicexpansionvalvecoil”
- “9.3.11Removingsolenoidvalvecoil(SVA)”
7 Disassembly the thermistors according to the items.
- “THM9-Thermistorfordischargegastemperature(Td)”
- “THM8-Thermistorforevaporatingtemperature(Te)”
- “THM7-Thermistorforoutdoorambienttemperature(Ta)”
8 Disassembly the pressure switch control wires and Faston connectors according to the item “9.3.8Removingthe
HighpressureswitchandPressureswitchforcontrol”.
9 Assembly the new electrical box.
? NOTE
Thespareelectricalboxissuppliedwithnewthermistors,valvecoilsandpressureswitchcontrolwireswiththeFastonconnectors.
a. Insert the radiation n -3- into the U-notch on the partition plate -2- and place the n on the fan box side.
b. Attach the electrical box tting -1- with the partition plate.
c. Assembly the pressure switch control wires and Faston connectors according to the item “9.3.8Removingthe
HighpressureswitchandPressureswitchforcontrol”.
d. Assembly the thermistors according to the items.
- “THM9-Thermistorfordischargegastemperature(Td)”
- “THM8-Thermistorforevaporatingtemperature(Te)”
- “THM7-Thermistorforoutdoorambienttemperature(Ta)”
e. Assembly the valve coils according to the items.
- “9.3.9Removing4-wayvalvecoil”
- “9.3.10Removingelectronicexpansionvalvecoil”
- “9.3.11Removingsolenoidvalvecoil(SVA)”
10 Connect all the connectors listed in the table above depending on the OU model.