15
TROUBLESHOOTING
The incubator is designed so that no internal electrical servicing should be requires under
normal conditions. If electrical servicing is necessary, it should be performed by qualified
service personnel. FOR PERSONAL SAFETY, ALWAYS DISCONNECT THE POWER
BEFORE SERVICING.
Always make a visual inspection of the incubator and control console when
troubleshooting. Look for loose or disconnected wires or tubing, which may be the source
of the trouble.
TEMPERATURE
Temperature too high
1/ controller set too high-see section 5.2
2/ controller failed on – call Customer Service
3/ wiring error – call Customer Service
Display reads "HI" or "400"+
probe is unplugged, is broken or wire to sensor is broken – trace
wire from display to probe; move wire and watch display to see
intermittent problems
Chamber temp spikes over set point
and then settles to set point
recalibrate –
see section 5.3
Temperature too low
1/ high limit set too low – see section 5.4
2/ controller set too low – see section 5.2
3/ unit not recovered from door opening – wait for display to stop
changing
4/ unit not recovered from power failure or being turned off –
incubators will need 24 hours to warm up and stabilize
5/ element failure – see if heating light is on; compare current draw
to data plate
6/ controller failure – confirm with front panel lights that controller
is calling for heat
7/ high limit failure – confirm with front panel lights that it is
operating correctly
8/ wiring problem – check all functions and compare wiring to
diagram in section 9.0, especially around any areas recently
worked on
9/ loose connection – check shadow box for loose connections
Display reads "LO"
1/ sensor is plugged in backwards – reverse sensor wires to
controller
2/ if ambient room temperature is lower than range of unit –
compare set points and ambient temperature to rated
Section
8
