Daikin FTKS50BVMB, Service Manual

Page: 122 / 456

SiEN18-622 Protection Control
Function 109
4.3 Discharge Pipe Protection Control
This discharge pipe protection control is used to protect the compressor internal temperature
against a malfunction or transient increase of discharge pipe temperature.
[INV compressor]
In di s ch a rge pipe temp.
protection control
HTdi>115°C
Tp>1
3 5°C
HTdi :
Tp :
or
INV u pper limit fre qu ency:
3 6 Hz Unlo a d
HTdi>115°C
Tp>1
3 5°C
or
HTdi>1 3 5°C
HTdi>120°C for 10 min. or more.
or
HTdi<110°C
Tp<125°C
&
After 3 0 s ec.
After 20 s ec.
HTdi>1 3 0°C
HTdi>120°C
or
HTdi<100°C
Tp<110°C
&
Di s ch a rge pipe
temper a t u re s t a nd b y
V a l u e of INV compre ss or di s ch a rge pipe
temper a t u re (Tdi) compen sa ted with
o u tdoor a ir temper a t u re
V a l u e of compre ss or port temper a t u re
c a lc u l a ted b y Tc a nd Te, a nd su ction
su perhe a ted degree.
INV u pper limit fre qu ency: 1- s tep u p
from c u rrent compre ss or fre qu ency
Di s ch a rge pipe protection
control not limited
1- s tep down from c u rrent
compre ss or fre qu ency
for 90 s ec.
or more.
When occ u rring 3 time s within 100 min u te s ,
the m a lf u nction code “F 3 ” i s o u tp u t.