Data Aire DAP III - Page 85

85
Problem Possible Cause Check or Remedy
Humidifi cation does not
come on - continued
Loose connection on plugs on cable
P6-5
F2 RELAY fuse of DAP III is blown
Panel is operating in manual override
and the humidifi er override is not ON
Faulty humidifi er relay
Incorrect confi guration
Humidifi er problem alarm
Restricted by interstage time delay or
autofl ush timer panel
Check connections use humidifi er manual
override switch to test
Replace with 8 amp fuse
Check manual override switches
Use manual Test Relay tests sub menu 9-3 to
check.
Check settings in sub menu 5-6.
Correct the alarm.
Wait 5-10 minutes or reset the panel. Refer to
humidifi cation logic
Modulating humidifi er does
not come on
No call for humidifi cation
Loose connection on plugs or cable
P15-16, P15-17
No DC output to humidifi er controller
Incorrect settings
Check humidity setpoint and deadband
Check connections. Use humidifi er manual
override switch to test.
Use manual diagnostic output test sub menu
9-4
Check settings in sub menu 5-6
Optional autofl ush timer
does not work
Incorrect setting
Loose connection on Relay module
Autofl ush timer of OFF
Loose connections on cable
Faulty autofl ush relay
Check setting in sub menu 5-10
Check Relay Module connections on PC
board, check pin P15-4
Check setting in sub menu 5-10
Check connections. Refer to wiring diagram
Use manual Test Relay sub menu 9-3 to
check.
Dehumidifi cation does not
come on
No call for dehumidifi cation
Inhibited by no airfl ow
Incorrect confi guration
Inhibited by humidity anticipation
Inhibited by reheat
Check humidity setpoint and deadband
Correct no airfl ow alarm
Check settings in sub menus 3-9 and 3-15.
Refer to humidity logic. Check sub menu 3-15
Refer to dehumidifi cation logic. Check sub
menu 3-9