Grundfos PHP A-1 4.0 User Manual

PHP A-1 Instruction Manual / Warnings and fault messages
No Message Description Check/Repair
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E17
E17: read error I2C
modu1e: ana1o’:I si’:In.
The internal communication
between the basic circuit
board and the expansion
module “analogue signalling”
at the I2C-bus failed.
- expansion module
“analogue signalling” is
activated while it is actually
not installed: correct
configuration
- cable connection is
disconnected or damaged
- expansion module: power
supply is disconnected
- expansion module
is defective
expansion module
“analogue signalling”
E18
E18: write error I2C
modu1e: ana1o’:I si’:In.
The internal communication
between the basic circuit
board and the expansion
module “analogue signalling”
at the I2C-bus failed.
- expansion module
“analogue signalling” is
activated while it is actually
not installed: correct
configuration
- cable connection is
disconnected or damaged
- expansion module: power
supply is disconnected
- expansion module
is defective
expansion module
“analogue signalling”
E19
E19: read error I2C
modu1e: binar’= si’:In.
The internal communication
between the basic circuit
board and the expansion
module “binary signalling” at
the I2C-bus failed.
- expansion module “binary
signalling” is activated while
it is actually not installed:
correct configuration
- cable connection is
disconnected or damaged
- expansion module: power
supply is disconnected
- expansion module
is defective
expansion module
“binary signalling”
E20
E20: write error I2C
modu1e: binar’= si’:In.
The internal communication
between the basic circuit
board and the expansion
module “binary signalling” at
the I2C-bus failed.
- expansion module “binary
signalling” is activated while
it is actually not installed:
correct configuration
- cable connection is
disconnected or damaged
- expansion module: power
supply is disconnected
- expansion module
is defective
expansion module
“binary signalling”
E21
E21:temPerat.sensor
T2 short circuit
The resistance of the sensor
is too low and falls below
the valid range.
- incorrect connection of
the sensor
- sensor connection
is damaged
- sensor element defective
sensor T2
39

Grundfos PHP A-1 4.0 Specifications

General

Brand	Grundfos
Model	PHP A-1 4.0
Category	Water Pump
Language	English