Grundfos PHP A-1 4.0 Instruction Manual page 39

PHP A-1 Instruction Manual / Warnings and fault messages
No Message
E17: read error I2C
E17
modu1e: ana1o':I si':In.
E18: write error I2C
E18
modu1e: ana1o':I si':In.
E19: read error I2C
E19
modu1e: binar'= si':In.
E20: write error I2C
E20
modu1e: binar'= si':In.
E21:temPerat.sensor
E21
T2 short circuit
39
Description
The internal communication
between the basic circuit
board and the expansion
module "analogue signalling"
at the I2C-bus failed.
The internal communication
between the basic circuit
board and the expansion
module "analogue signalling"
at the I2C-bus failed.
The internal communication
between the basic circuit
board and the expansion
module "binary signalling" at
the I2C-bus failed.
The internal communication
between the basic circuit
board and the expansion
module "binary signalling" at
the I2C-bus failed.
The resistance of the sensor
is too low and falls below
the valid range.
Check/Repair
- 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" 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" 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" 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
- incorrect connection of
the sensor
- sensor connection
is damaged
- sensor element defective
Necessary device options
for this message
expansion module
"analogue signalling"
expansion module
"analogue signalling"
expansion module
"binary signalling"
expansion module
"binary signalling"
sensor T2