Hi Pressure Protection Operation - Toshiba HWS-802XWHM3-E Service Manual

Outdoor LED
Check code
indication
[P20] <Indication 1> <Indication 2>
(No specific description indicates outdoor unit parts.)

[Hi pressure protection operation]

Service valve is fully opened.
Reset the power source and perform
a trail operation according to the season.
Cooling season
Cooling operation
Outdoor TL sensor is normal.
(Measure resistance)
Outdoor fan is free from crack
or looseness.
Outdoor fan operates normally.
Something prevents outdoor unit
heat exchange
- Clogged heat exchanger
- short circuit
Check for refrigerant overcharged, clogged
cycle, pipe break, abnormal overload, etc.
If defective, repair defective portion
Something prevents heat
exchange of hydro unit.
- Clogged filter
- Clogged heat exchanger
- Short circuit
Check for refrigerant overcharged, clogged
cycle, pipe break, abnormal overload, etc.
If defective, repair defective portion
97
Check and Action procedure
Heating season
Heating operation
Replace sensor
Check outdoor fan
If defective, replace or tighten it
Check the same item as
those for [P22] abnormality
Remove the disturbing
element
Open fully service valve
Remove the
disturbing element