4. Service procedures

4-1. Meaning of Alarm Messages

(1) Contents of remote controller switch alarm display

4

 

 

 

ON:

Blinking:

 

 

OFF:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wired

 

 

 

 

Wireless

 

 

 

 

 

 

 

 

remote

remote controller

 

 

 

 

 

control

 

receiver display

 

Possible cause of malfunction

 

display

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

 

 

Timer

Standby

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Serial commu-

Remote controller is

 

Error in receiving serial communication signal

 

E01

 

 

 

 

 

 

 

 

 

 

nication errors

detecting error signal from

 

(Signal from main indoor unit in case of group control)

 

 

 

 

 

 

 

 

 

 

 

 

Mis-setting

indoor unit

 

Outdoor system address, indoor system address, or indoor unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

individual/main/sub setting is not set

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Automatic address setting is not completed)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto address is not completed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error in transmitting serial communication signal

 

E02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E03

 

 

 

 

 

 

 

 

 

 

 

Indoor unit is detecting error signal from remote controller (and system controller)

 

 

 

 

 

 

 

 

 

 

 

 

Improper setting of indoor

 

Indoor unit address setting is duplicated

 

E08

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

unit or remote controller

 

Remote controller setting is duplicated

 

E09

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit is detecting error

 

Error in transmitting serial communications signal

 

E10

 

 

 

 

 

 

 

 

 

 

 

signaled from signal option

 

Error in receiving serial communications signal

 

E11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Automatic address setting

 

Starting auto address setting is prohibited

 

 

 

 

 

 

 

 

 

 

 

 

 

failed

 

This alarm message shows that the auto address connector

 

E12

 

 

 

 

 

 

 

 

 

 

 

 

 

CN100 is shorted while other RC line is executing auto address

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit capacity too low

 

E15

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit capacity too high

 

E16

 

 

 

 

 

 

 

 

 

 

 

Setting error

 

No indoor units connected

 

E20

 

 

 

 

 

 

 

 

 

 

 

 

Main unit duplication in simultaneous-operation multi control

 

E14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(detected by outdoor unit)

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit is detecting error

 

Error in receiving serial communications signal

 

E04

 

 

 

 

 

 

 

 

 

 

 

signaled from outdoor unit

 

Error in transmitting serial communications signal

 

E05

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor unit is detecting

 

Error in receiving serial communications signal (including unit

 

E06

 

 

 

 

 

 

 

 

 

 

 

error signaled from indoor

 

quantity verification failure)

 

 

 

 

 

 

 

 

 

 

 

 

 

unit

 

Error in transmitting serial communications signal

 

E07

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

An indoor unit detected

 

Error in transmitting serial communications signal

 

E17

 

 

 

 

 

 

 

 

 

 

 

trouble in the signal from

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

another indoor unit

 

Error in receiving serial communications signal

 

E18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Communications trouble

 

Communications failure with MDC

 

E31

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

between units

 

Indoor unit group settings error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mis-setting

Setting error

 

 

L01

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor/outdoor unit type mismatch

 

L02

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Simultaneously

 

 

 

 

 

 

Main unit duplication in group control (detected by indoor unit)

 

L03

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor unit address duplication (system address)

 

L04

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Simultaneously

 

 

 

 

 

 

Group wiring connected for independent indoor unit

 

L07

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address not set or group not set

 

L08

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Simultaneously

 

 

 

 

 

 

Indoor unit capacity not set

 

L09

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor unit capacity not set or setting error

 

L10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Miswiring in group control wiring

 

L11

 

 

 

Simultaneously

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit type setting error (capacity)

 

L13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Continued

4-2

Page 166
Image 166
Panasonic R410A Service procedures Meaning of Alarm Messages, Contents of remote controller switch alarm display

R410A specifications

Panasonic R410A is a refrigerant that has gained significant popularity in the air conditioning and refrigeration industry due to its favorable environmental properties and performance characteristics. Specifically designed to replace the harmful R22 refrigerant, which is being phased out due to its ozone-depleting potential, R410A offers a more eco-friendly alternative without compromising on efficiency or power.

One of the main features of R410A is its high energy efficiency. It operates at a higher pressure than R22, resulting in better heat transfer capabilities. This increased efficiency translates to lower energy consumption, making units using R410A more cost-effective in the long run. Additionally, R410A is known for its ability to provide excellent cooling performance even in high-temperature environments, making it suitable for a variety of applications, from residential air conditioning systems to commercial refrigeration units.

In terms of composition, R410A is a blend of two hydrofluorocarbons (HFCs), namely R32 and R125. This combination not only minimizes ozone depletion potential (ODP) but also reduces global warming potential (GWP) compared to older refrigerants. Panasonic has emphasized the importance of innovative technologies in its products, and R410A aligns perfectly with the company's commitment to developing sustainable solutions.

Panasonic also integrates advanced technologies to optimize the performance of R410A systems. For example, variable speed compressors, known as inverter technology, enhance system efficiency by adjusting the compressor's speed according to the cooling demand. This ensures that energy is only consumed when needed, further reducing operational costs.

Furthermore, R410A has a wide range of applications, including air conditioning systems, heat pumps, and chillers. Its versatility makes it a popular choice among manufacturers and consumers alike. The refrigerant is also compatible with existing R22 equipment, although specific retrofit procedures must be followed to ensure peak performance and reliability.

In conclusion, Panasonic R410A stands out as an innovative refrigerant choice in the HVAC industry, offering a combination of energy efficiency, environmentally friendly properties, and advanced technologies. As regulatory frameworks continue to tighten on greenhouse gas emissions, R410A and similar refrigerants are expected to play a crucial role in shaping a more sustainable future for air conditioning and refrigeration. Its high performance and lower environmental impact solidify its position as a leading refrigerant in contemporary cooling solutions.