Outback FM60 User Manual

Troubleshooting
94 900-0009-01-00 Rev D
Symptom Remedy
FLEXmax is always
SLEEPING
 Check battery voltage. If the battery voltage is at or above the
Absorbing voltage set point (compensated for battery temperature), the
FLEXmax will not wake up.
 Check PV voltage. The PV voltage has to be at least two volts greater
than the battery voltage for the initial wakeup.
 If voltage is not present, check the PV array breaker (or fuse). Confirm
the PV array breaker (or fuse) is sized appropriately.
PV voltage reads 000
 If the PV array voltage on the display rises with the PV breaker OFF,
but reads 000 with the PV circuit breaker on, the PV array polarity may
be reversed or shorted.
 If the PV voltage still reads 000 with the PV circuit breaker off after a
minute, call OutBack Technical Support for assistance.
Status screen shows
BatTmpErr
 Confirm the type of temperature sensor. Only the OutBack RTS
(remote temperature sensor) can be used with the FLEXmax.
 If the RTS is correct, it may be faulty or damaged. Disconnect the
RTS from the jack to resume normal operation. Replace the RTS as
soon as possible.
FLEXmax internal fan
not running
The internal fan will only run when the internal temperature has reached
approximately 112°F. The fan will continue running until the internal
temperature is less than 104°F.
FLEXmax makes a
squealing sound
If the MPP voltage is low enough to approach the battery voltage (usually
when the array is very hot), it is near the effective limit of the MPPT
function. This may cause the FLEXmax components to make a squealing
noise. The problem can be alleviated by placing the FLEXmax in
Extended Play, which extends the parameters of the MPPT sweep.
See page 59 for instructions on using Extended Play.
This mode may not be desirable under more standard conditions when the
PV voltage is higher. The efficiency of the FLEXmax controller may be
reduced.
LCD display
scrambled
Reboot the FLEXmax controller as described on page 60. This will clear
any operating problems or glitches. It will also restore all programming
items to their factory default settings.