Mitsubishi Electric PUHY-HP120TNU-A, Service Handbook

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[8-12 Parts Replacement Instructions ]
HWE18240_GB chapter 8 -
71
8 Troubleshooting Based on Observed Symptoms
(9) Remove the fin guards and wiring covers from the right, left, and rear of the unit casing. (24 screws as shown in Figure 7.)
*1 Sold separately. Supplied as a standard accessory with hyper-heating models.
*2 When fin guards are not attached, the number of screws to be removed is 12 in total.
*1 Sold separately. Supplied as a standard accessory with hyper-heating models.
(10) If a separately sold panel heater is installed, disconnect the connectors of the panel heater wiring. Bundle the excessive
disconnected panel heater wiring with adhesive tape or other materials. (4 locations as shown in Figure 8.)
Before removing the protective tube After removing the protective tube
Unit wiring
Cable tie
Protective tube
Panel heater wiring
(sold separately)
Unit wiring
Connector
Panel heater wiring
(sold separately)
Right fin guard
*2
*2
*2
Figure 7 Right Figure 7 Rear Figure 7 Left
Figure 8 Right Figure 8 Rear Figure 8 Left
Rear fin guard
Rear wiring cover
Rear wiring cover
(*1)
Rear wiring cover
(*1)
Left fin guard
Right wiring cover
Unit wiring
Unit wiring
Unit wiring
Unit wiring
Panel heater wiring
(*1)
Panel heater wiring
(*1)
Left panel heater
(*1)
Right panel heater
(*1)
Rear panel heater
(*1)
Panel heater wiring
(*1)
Right wiring cover
(*1)
Right panel heater
(*1)
Rear panel heater
(*1)
Left panel heater
(*1)
Left wiring cover
Left wiring cover
Left wiring cover
(*1)