Panasonic Fault Diagnostics – Older Style FS Units R22

Fault Diagnostics – Older Style FS Units R22

First generation series 11NP Series with E style fault codes

Press check on the Wired Controller to call up the Fault Codes.

Fault Code At Remote  = E1

Indoor Unit PCB

LED1   = Flash

LED2   = Flash

LED3   = Flash

Measuring Of Fault Code = Signal from RC to ID Unit faulty

Fault Code At Remote  = E2

Indoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

Measuring Of Fault Code = Float Switch

Fault Code At Remote  = E3

Indoor Unit PCB

LED1   =

LED2   = Lit

LED3   = 

Measuring Of Fault Code = Air Sensor Faulty

Fault Code At Remote  = E4

Indoor Unit PCB

LED1   =

LED2   =

LED3   = Lit

Measuring Of Fault Code = Pipe sensor Faulty

Second Generation 21NP Series with F Fault Codes

Press Check on the Wired Controller to call up the Fault Codes

Fault Code At Remote  = F2

Indoor Unit PCB

LED1   = Lit

LED2   = Lit

LED3   =

LED4   = Lit

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = Float switch

Fault Code At Remote  = F3

Indoor Unit PCB

LED1   =

LED2   = Lit

LED3   =

LED4   =

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = Indoor Air Sensor Faulty

Fault Code At Remote  = F4

Indoor Unit PCB

LED1   =

LED2   =

LED3   = Lit

LED4   =

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = Indoor Air Sensor Faulty

Fault Code At Remote  = F5

Indoor Unit PCB

LED1   = Lit

LED2   = Lit

LED3   = Lit

LED4   = Lit

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = Signal from RC to ID faulty

Fault Code At Remote  = F5

Indoor Unit PCB

LED1   = Lit

LED2   = Lit

LED3   =

LED4   =

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = No Signal from ID to RC

Fault Code At Remote  = F6

Indoor Unit PCB

LED1   =

LED2   = Lit

LED3   = Lit

LED4   = Lit

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = Signal from ID to OD faulty

Fault Code At Remote  = F6

Indoor Unit PCB

LED1   =

LED2   =

LED3   = Lit

LED4   = Lit

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Measuring Of Fault Code = No Signal from Od to ID

Fault Code At Remote  = F13

Indoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Outdoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   = Lit

Measuring Of Fault Code = OD Unit Overcurrent Protection

Fault Code At Remote  = F15

Indoor Unit PCB

LED1   = Lit

LED2   =

LED3   =

LED4   =

Outdoor Unit PCB

LED1   = Lit

LED2   = Lit

LED3   =

LED4   =

Measuring Of Fault Code = HP Switch

Fault Code At Remote  = F18

Indoor Unit PCB

LED1   = Lit

LED2   =

LED3   = Lit

LED4   =

Outdoor Unit PCB

LED1   =

LED2   =

LED3   = Lit

LED4   =

Measuring Of Fault Code = Outdoor Pipe Sensor Faulty

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