GE TBG440ANDR, Technician Service Manual

Page: 24 / 141

Page 24
VII. FAILURE DIAGNOSIS
I. Air leakage
G. Containing air that
cannot be
condensated.
E. Clogged by dusts
(suction tube)
C. Slight air leakage
A. Too much freon.
Temperature at the heat
dissipator not raised
Slight raise of heatdissipater
temperature
High suction pressure.
Discharge tube temp. being
not too high.
Low suction pressure
Fair heat dissipater temp.
High current & power
Without flowing sound
Low current & power
Low suction pressure
Frosted or fogged suction
tube.
Current & power being too
low.
Temp. discharged being too
low
Being not cold
Normal frosting
High current & power
Sound of oil flow
Normal suction pressure
High current & power
High suction pressure
Inadequate temperature
Inadequate coldness
High suction pressure
Low current & power
Low heat dissipater temp
No temperature difference between discharge tube and
suction tube
No flowing sound and almost
cannot be frosted
Frosting being clogged
Without flowing sound
Inadequate coldness Inadequate coldness
Frosting being clogged
High current & power Low suction pressure
High compressor temp.
Unusual noise at the
discharge section due to
clogged by dust
Low current & power Inadequate coldness
Almost no frosting
Cycle frost & mist
Change of suction pressure
Change of current & power
Intermittent flowing sound
Intermittent raise of heat dissipater temperature
Intermittent raise of
compressor temperature
Inadequate coldness
High temp. at discharge tube
and heat dissipater
Evaporator temperature being
over -18°C
Almost no frosting
Poor freezing effect
Low current & power
Low suction pressure
Low heat dissipater temp. Low discharge tube temp.
High
in
refri
g
sto r
o
J. Over filled oil
H. Poor compressing
F. Dusts clog the
exhaust
D. Water clogging
B. Insufficient Freon