ICC Mirius, Руководство по установке

Страница: 40 / 56

40
BACnet / Boilers
Table 37. Lock and Hold Codes
Code Description Recommended Troubleshooting of Lockout Codes
106 Flame lost in MFEP 1. Check pilot valve (Main Valve for DSI) wiring and operation - correct any
errors.
2. Check the fuel supply.
3. Check fuel pressure and repeat turndown tests.
4. Check ignition transformer electrode, flame detector, flame detector siting or
flame rod position.
5. If steps 1 through 4 are correct and the fault persists, replace the module.
107 Flame lost early in run
108 Flame lost in run
109 Ignition failed
110 Ignition failure occurred Hold time of recycle and hold option. Will not be a lockout fault. Hold Only.
111 Flame current lower than WEAK threshold Internal hardware test. Not a lockout.
112 Pilot test flame timeout Interrupted Pilot or DSI application and flame lost when system in “test” mode.
1. Reset the module to restart.
113 Flame circuit timeout Flame sensed during Initiate or off cycle, hold 240 seconds, if present after 240
seconds, lockout.
114-121 RESERVED
Rate Proving Faults
122 Lightoff rate proving failed 1. Check wiring and correct any potential wiring errors.
2. Check High Fire Switch to assure proper function (not welded or jumpered).
3. Manually drive the motor to the High Fire position and adjust the HF switch
while in this position and verify voltage through the switch to the HFS input with
a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the module.
123 Purge rate proving failed
124 High fire switch OFF 1. Check wiring and correct any potential wiring errors.
2. Check High Fire Switch to assure proper function (not welded or jumpered).
3. Manually drive the motor to the High Fire position and adjust the HF switch
while in this position and verify voltage through the switch to the HFS input with
a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the module.
125 High fire switch stuck ON
126 Low fire switch OFF 1. Check wiring and correct any potential wiring errors.
2. Check Low Fire Switch to assure proper function (not welded or jumpered).
3. Manually drive the motor to the High Fire position and adjust the LF switch
while in this position and verify voltage through the switch to the LFS input with
a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the module.
127 Low fire switch stuck ON
128 Fan speed failed during prepurge 1. Check wiring and correct any potential wiring errors.
2. Check VFDs ability to change speeds.
3. Change the VFD
4. If the fault persists, replace the module.
129 Fan speed failed during preignition
130 Fan speed failed during ignition
131 Fan movement detected during standby
132 Fan speed failed during run
133-135 RESERVED
Start-Check Faults
136 Interrupted Airflow Switch failed to close 1. Check wiring and correct any possible wiring errors.
2. Check Interrupted Airflow switch(es) to assure proper function.
3. Verify voltage through the airflow switch to the IAS input with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the module.
137 ILK failed to close 1. Check wiring and correct any possible shorts.
2. Check Interlock (ILK) switches to assure proper function.
3. Verify voltage through the interlock string to the interlock input with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the module.
138-142 RESERVED
143 Internal fault: Flame bias out of range 1
144 Internal fault: Flame bias out of range 2
145 Internal fault: Flame bias out of range 3
146 Internal fault: Flame bias out of range 4
147 Internal fault: Flame bias out of range 5
148 Internal fault: Flame bias out of range 6
Fault Codes 149 Through 165 are OEM-Specific Fault Codes.
149 Flame detected OEM Specific
1. Holds if flame detected during Safe Start check up to Flame Establishing
period.
150 Flame not detected OEM Specific
1. Sequence returns to standby and restarts sequence at the beginning of Purge
after the HF switch opens. If flame detected during Safe Start check up to
Flame Establishing period.