How To Diagnose The Trouble - Toshiba RAS-10SAVP-E Service Manual

Toshiba ilmalämpöpumppujen myynti, huolto ja asennus: Jäähdytinpalvelu RefGroup Oy, Vantaa
The pulse motor circuits are mounted to both indoor and outdoor units.
Therefore, diagnose troubles according to the trouble diagnosis procedure as described below.
(Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.)
No. Troubleshooting Procedure
1 First Confirmation
2 Primary Judgment
3 Judgment by Flashing LED of Indoor Unit
4 Self-Diagnosis by Remote Controller
5 Judgment of Trouble by Every Symptom
u Precautions when handling the new inverter (3DV Inverter)
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts on the
P .C. board by hand.
The new inverter (3DV inverter) will be incorporated starting with this unit.
u The control circuitry has an uninsulated construction.
Separated potential
Shared potential

11. HOW TO DIAGNOSE THE TROUBLE

Table 11-1
Page
70
71
71
72
75
CAUTION: HIGH VOLTAGEN
Photocoupler
MCU
JAVP-E series (insulated type)
MCU
Amplifier
SAVP-E, SAVP-ND, GAVP-E, EAVP-E series (uninsulated type)
www.ilmalämpöpumput.com
No. Troubleshooting Procedure
6 How to Check Simply the Main Parts
7 Troubleshooting
8 How to Diagnose Trouble in Outdoor Unit
9 How to Check Simply the Main Parts
How to Simply Judge Whether Outdoor
10
Fan Motor is Good or Bad
(3DV: 3-shunt Discrete Vector control)
G-Tr
FET
(6IN1)
IGBT × 6
Driver Amplifier
FET × 6
Driver
Fig. 11-1
– 68 –
Compressor
Fan motor
Hall device
Photocoupler
Compressor
Fan motor
Page
80
81
82
83
88