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4.6 Troubleshooting
Code
E.1
E.2
E.3
3-way Valve Error – valve not in correct
position after start-up/'home' position call
E.4
E.5
Speed Calc Error
E.6
E.7
E.8
E.9
E.A
ADC_CNFG Error
E.E
Ebus Reset Error
E.F
Fan Speed Error – RPM too low (<200)
E.P
XPANDR_I2C Error
Description
Possible Remedies
1.
Remove all thermostat demands
2.
Reboot GF150 PCB (disconnect 24 V AC power via
2-pole connector on top-left -- yellow wires from
transformer)
The 3WV should start humming on power-up, cycling
through its 'Home' position (which should clear the error)
and ending in the Forced AIr Heating position.
If the 'E.3' error re-appears, consider replacing the 3WV
harness and/or the valve itself.
Assuming a simple malfunction of the 'Home' position
detection switch, the valve should continue to operate as
normal. However, any misalignment will be undetecable.
Call NTI Tech Support.
Call NTI Tech Support.
Call NTI Tech Support.
If the error persists:
1.
Set all S3 & S4 DIP switches to ON
2.
Apply G demand via jumper
Blower should reach maximum speed quickly.
If blower appears slow or error persists, consider replacing
the Blower Motor Controller or the GF150 Controller,
respectively.
Call NTI Tech Support.
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