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166 Hardware Maintenance Manual: xSeries 250
Temperature error messages
Fan error messages
Message Action
DASD "X" Over Temperature (level-
critical; Direct Access Storage Device bay
"X" was over temperature)
1. Ensure system is being properly cooled;
see “Temperature checkout” on page 32.
DASD Over recommended Temperature
(sensor X) (level-warning; the DASD
backplane had an over temperature
condition)
1. Ensure system is being properly cooled;
see “Temperature checkout” on page 32.
DASD under recommended temperature
(sensor X) level-warning; the DASD
backplane had an under temperature
condition)
1. Ambient temperature must be within
normal operating specifications; (see
“Features and specifications” on page 3).
Power Supply "X" Temperature Fault
(level-critical; power supply "x" had over
temperature condition)
1. Ensure system is being properly cooled;
see “Temperature checkout” on page 32.
2. Replace Power Supply "X"
System board is over recommended
temperature (level-warning; system board
is over recommended temperature)
1. Ensure system is being properly cooled;
see “Temperature checkout” on page 32.
2. Replace system board
System board is under recommended
temperature (level-warning; system board
is under recommended temperature)
1. Ambient temperature must be within
normal operating specifications; (see
“Features and specifications” on page 3).
System over temperature for CPU "X"
(level-warning; CPU "X" reporting over
temperature condition)
1. Ensure system is being properly cooled;
see “Temperature checkout” on page 32.
2. Replace CPU "X".
3. Replace Processor/PCI Board.
System under recommended CPU "X"
temperature (level-warning; system
reporting under temperature condition for
CPU "X")
1. Ambient temperature must be within
normal operating specifications; (see
“Features and specifications” on page 3).
2. Replace CPU "X".
3. Replace Processor/PCI Board.
Message Action
Fan "X" failure (level-critical; fan "X" had a
failure)
1. Check connections to fan "X"
2. Replace fan "X"
Fan "X" fault (level-critical; fan "X" beyond
recommended RPM range)
1. Check connections to fan "X"
2. Replace fan "X"