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Table 8. Alarm Codes
Event
Code
ActionDisplay Message
Event
Code
136
ALARM(136) OUTSIDE AIR DAMPER/ECON MECHANICAL
FAULT
BLOWER RPM IS TOO LOW AS INDICATES BY BLOWER STATUS. THIS MEANS THAT THE BLOWER IS NOT WORKING.
137 ALARM(137) LOW OUTDOOR AIRFLOW OUTDOOR AIR DAMPER. MAY BE A STUCK CONDITION.
139 ALARM(139) OUTDOOR AIRFLOW TOO HIGH VENTILATION CFM IS TOO HIGH SO THE RTU IS WASTING ENERGY.
140
ALARM(140) CFM TARGET TOO LOW THIS SETUP MIN XXXX
CFM
VERIFY THE MSAV.BLOWER SETTINGS AND SET THE CM TARGETS ABOVE XXXX CFM
141
ALARM(141) CFM TARGET TOO HIGH THIS SETUP MAX
XXXX CFM
VERIFY THE MSAV.BLOWER SETTINGS AND SET THE CM TARGETS BELOW XXXX CFM
143 ALARM(143) OA DAMPER ERROR
DAMPER DIFFERENTIAL PRESSURE SENSOR VALUE IS NOT WITHIN THE VALID RANGE. MAY BE PROBLEM WITH
THE SENOR TUBING, HIGH RETURN DUCT RESISTANCE ETC.
144 ALARM(144) FIRMWARE UPDATE M2 CONTROL BOARD FIRMWARE UPDATE RECORDED
145 ALARM(145) VCB NOT PRESENT SMARTAIRFLOW™ IS INSTALLED BUT VCB BOARD IS NOT PRESENT/NOT RECOGNIZED BY M2.
148 ALARM(148) SMARTAIRFLOW CONFIG ERROR
SMARTAIRFLOW™ OPTION IS INSTALLED BUT BLOWER TYPE IS NOT EP CAPABLE OR DAMPER IS NOT INSTALLED.
ONLY BLOWER TYPES M (VGD) AND E (ECM) ARE EP CAPABLE.
149 ALARM(149) VCB PRESSURE SENSOR ERROR HIGH OR LOW OUT OF RANGE READING FOR THE VCB1 PRESSURE SENSOR.
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