Daikin FTKS20CVMB, Service Manual

Page: 152 / 246

SiENBE04-401A Check
Service Diagnosis 143
5.1.7 Power Supply Waveforms Check
Check No.10
Measure the power supply waveform between pins 1 and 3 on the terminal board, and check
the waveform disturbance.
„ Check to see if the power supply waveform is a sine wave (Fig.1).
„ Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2)
5.1.8 Inverter Units Refrigerant System Check
Check No.11
[Fig.1] [Fig.2]
Refriger a nt s y s tem check
Check for g as le a k s .
S ee the s ection on in su fficient g as
detection.
Cond u ct the check a fter oper a ting the
e qu ipment for a su fficient length of time.
Correct the pro b lem.
Cond u ct v a c uu m drying.
Repl a ce the refriger a nt.
I s
the di s ch a rge
thermi s ter di s connected from
the holder?
(R1445)
YE S
YE S
YE S
I s a ny moi s t u re
fo u nd in s ight gl ass .
NO
NO