Code
Description
Type
Cause
Solution
A3MF
AWB Clean Fan
Filter
Alarm
Cooling inlet
screen is dirty
Clean inlet screen.
Verify accessory is rated for 240 VAC.
A4
★
_
High Current
Unit _ Zone _
Alarm
Defective or
shorted to
ground on
zone
Verify heater resistance and check for shorts to
ground. Replace as necessary.
A4C_
High Current
Fan AWB, Unit
_
Deviation
Fan is drawing
too much
current
Verify there is not an air obstruction at the inlet/outlet
of enclosure. verify nothing is preventing fan rotation.
Replace fan if necessary.
Replace MZLP.
A7
★
_
Unexp. Curr.
Unit _ Zone _
Alarm
Unexpected
current flow to
zone
Faulty accessory heater. Measure resistance to
ground between heater leads.
Check for loose or disconnected wires or plugs.
Check for blown fuses on MZLP.
Check heater resistance for open circuit.
Check for shorts between heater and ground.
A8
★
_
No Current Unit
_ Zone _
Alarm
No Current
Flow to the
Zone
Replace heater if necessary.
A8C_
AWB No Fan
Current
Alarm
Cooling fan
not working
Verify fan is plugged in. Replace if necessary.
AM3 _
High Current
SSR MZLP _
Alarm
Excessive
current flow
in the SSR
Check for shorts in harness to SSR. Check polarity of
wiring to SSR. Replace if necessary.
AM4 _
High Current
Contactor
MZLP _
Alarm
Defective or
shorted to
ground on
MZLP
Check for shorts in the harness to contactor. Check
the polarity to contactor. Replace contactor if
necessary.
AM8_
No Current
Contactor
MZLP _
Alarm
No Current
Flow to the
Contactor
Ensure harness to MZLP is connected. Ensure wiring
to contactor is secure. Replace contactor if necessary.
System is not properly loaded with correct Software
Dial not set correct on MZLP. Duplicate MZLP dial
positions (i.e. 1 to 1, 2 to 2, ect)
Check all CAN connections between the ADM and
missing MZLP.
Check if hardware exists on the network.
CAC_
Comm Error
MZLP _
Alarm
System not
responding to
ADM.
Replace MZLP if necessary.
Dial not set correct on MZLP 1. Set to 1 on board with
daughter board.
Ensure connections between the ADM and hardware
are secure.
CACX
DB Not Present
Unit A
Alarm
Daughter
Board not
responding
Replace Daughter Board
Dial not set correct on MZLP 4. Set to 4 on board with
daughter board.
Ensure connections between the ADM and hardware
are secure.
CACY
DB Not Present
Unit B
Alarm
Daughter
Board not
responding
Replace Daughter Board
Replace AWB
CACV
AWB not
present Unit
A
Alarm
AWB not
responding
Ensure connections between the ADM and hardware
are secure.
40
334130A
Содержание 334130A
Страница 10: ...Component Identification Electrical Control Enclosure Figure 3 Electrical Enclosure 10 334130A...
Страница 57: ...Repair Figure 35 Inside of Electrical Control Enclosure 334130A 57...
Страница 65: ...Parts Parts Therm O Flow 200 Supply Unit 334130A 65...
Страница 68: ...Parts Electrical Module 68 334130A...
Страница 69: ...Parts 334130A 69...