Troubleshooting Guide; Self Diagnosis Function - Panasonic PAPAMY1702034CE Service Manual

16. Troubleshooting Guide

16.1 Self Diagnosis Function

Diagnosis Abnormality or
display protection control
Indoor/outdoor abnormal
H11
communication
Indoor unit capacity
H12
unmatched
Compressor temperature
H15
sensor abnormality
Outdoor current
H16 transformer (CT)
abnormality
Outdoor air temperature
H27
sensor abnormality
Outdoor heat exchanger
H28 temperature sensor 1
abnormality
Outdoor heat exchanger
H32 temperature sensor 2
abnormality
Indoor/outdoor
H33 misconnection
abnormality
Outdoor gas pipe
H36 temperature sensor
abnormality
Outdoor liquid pipe
H37 temperature sensor
abnormality
Outdoor high pressure
H64
sensor abnormality
H67 Nanoe abnormality
H70 Light sensor abnormality
Outdoor fan motor
H97
mechanism lock
Indoor high pressure
H98
protection
Indoor operating unit
H99
freeze protection
4-way valve switching
F11
abnormality
Abnormality judgment Protection operation
Indoor fan only
After operation for operation can start by
1 minutes entering into force
cooling operation
90s after power supply
Continuous for 5s
-
Continuous for 5s
Continuous for 5s
Continuous for 5s
-
Heating protection
Continuous for 5s
operation only
Cooling protection
Continuous for 5s
operation only
Continuous for 1 minute
Nanoe stop for 5 minutes
for 3 times
Continuous for 24 hours,
15 days
2 times happen within
20 minutes
-
-
4 times happen within
30 minutes
Problem
Indoor/outdoor
communication not
establish
Total indoor capability
more than maximum
limit or less than
-
minimum limit, or
number of indoor unit
less than two
Compressor
- temperature sensor
open or short circuit
Current transformer
- faulty or compressor
faulty
Outdoor air
- temperature sensor
open or short circuit
Outdoor heat
exchanger
-
temperature sensor 1
open or short circuit
Outdoor heat
exchanger
-
temperature sensor 2
open or short circuit
Indoor and outdoor
-
rated voltage different
Outdoor gas pipe
temperature sensor
open or short circuit
Outdoor liquid pipe
temperature sensor
open or short circuit
High pressure sensor
- open circuit during
compressor stop
- Nanoe faulty
Light sensor open or
-
short circuit
Outdoor fan motor
- lock or feedback
abnormal
Indoor high pressure
-
protection (Heating)
Indoor freeze
-
protection (Cooling)
4-way valve switching
-
abnormal
47
Check location
 Indoor/outdoor wire
terminal
 Indoor/outdoor PCB
 Indoor/outdoor connection
wire
 Indoor/outdoor connection
wire
 Indoor/outdoor PCB
 Specification and
combination table in
catalogue
 Compressor temperature
sensor lead wire and
connector
 Outdoor PCB faulty or
compressor faulty
 Outdoor air temperature
sensor lead wire and
connector
 Outdoor heat exchanger
temperature sensor 1 lead
wire and connector
 Outdoor heat exchanger
temperature sensor 2 lead
wire and connector
 Indoor and outdoor units
check
 Outdoor gas pipe
temperature sensor lead
wire and connector
 Outdoor liquid pipe
temperature sensor lead
wire and connector
 High pressure sensor
 Lead wire and connector
 PCB
 Nanoe system
 High voltage
 Light sensor (defective or
disconnect)
 Outdoor fan motor lead
wire and connector
 Fan motor lock or block
 Check indoor heat
exchanger
 Air filter dirty
 Air circulation short circuit
 Check indoor heat
exchanger
 Air filter dirty
 Air circulation short circuit
 4-way valve
 Lead wire and connector