Johnson Controls HVAHP060B21S - Defrost Operation

OUTDOOR UNITS
TC-16001-rev.5
2-21
n
Defrost Operation
I.U. : Indoor Unit
: Actuator (refer to Ta
ble 2.1)
“DEFROST” Indication: OFF
Heating
Operation
Heating
Operation
No
No
Yes
Yes
Defrosting
Start Condition
is approved.
Defrosting
Stop Condition
is approved.
Defrost
Operation
(*) Refer to Service Manual for the timing diagram of the reversing valve.
Power to
RVR : OFF
(*)
Power to
RVR : ON
(*)
“DEFROST” Indication
MIF Operation: OFF
MOF Operation: OFF
MOF Operation: ON
MIF Operation at Set Fan Speed
MIF Operation
at Slo Fan Speed
MIF Operation at
Low Fan Speed
I.U. Air
Outlet
Temp.
Yes
No Yes
No
Pd < 261 psi
(1.8MPa)
Elapsed Time
>3min.
> 86
o
F
(30
o
C)
> 77
o
F (25
o
C) and
< 86
o
F (30
o
C)
< 77
o
F
(25
o
C)