Marvair 70947 Control Board
The Marvair 70947 Control Board is the central diagnostic and operational hub for high-efficiency Marvair HVAC systems, including MAH and MGH vertical wall-mounted units. As a veteran-grade OEM replacement control board, this component is engineered to manage critical HVAC system functions such as compressor sequencing, low ambient fan cycling, and lead/lag logic. It features an integrated diagnostic LED to assist technicians with rapid fault isolation and system troubleshooting, ensuring that telecommunication shelters and commercial air handling units maintain stable environmental setpoints. This circuit board includes built-in protective delays, including a three-minute short-cycle protection and pressure switch monitoring, to safeguard the refrigerant circuit against operational failures in demanding field conditions.
Key Benefits for Contractors:
- Direct OEM Integration: Drop-in 70947 replacement ensures seamless electrical compatibility and eliminates field-wiring modifications.
- Advanced System Protection: Integrated lockout logic for High Pressure (HPS) and Low Pressure (LPS) switches prevents component damage during fault conditions.
- Precision Low Ambient Control: Regulates condenser fan cycles to maintain proper head pressure in temperatures as low as 20°F.
- Fault Diagnostics: On-board LED status indicator provides real-time troubleshooting codes, reducing billable diagnostic time.
- Industrial-Grade Durability: Constructed with high-spec solid-state components to withstand the high internal heat loads of telecom HVAC applications.
Common Questions:
What Marvair models is the 70947 board compatible with?
This board is the standard OEM replacement for Marvair MAH, MGH, AVHA, and AVPA series vertical wall-mount air conditioners and heat pumps commonly used in E-houses and data centers.
How do I reset the lockout on this control board?
Lockouts triggered by pressure switch faults can typically be cleared by cycling the 24V control power at the thermostat or the main HACR breaker after verifying the underlying mechanical issue is resolved.
Does this board support economizer operation?
Yes, the Marvair 70947 is designed to interface with factory-installed economizer dampers to optimize free cooling and improve EER efficiency during low outdoor ambient conditions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $493.45
-65%$493.45
$172.71Marvair 70947 Control Board
The Marvair 70947 Control Board is the central diagnostic and operational hub for high-efficiency Marvair HVAC systems, including MAH and MGH vertical wall-mounted units. As a veteran-grade OEM replacement control board, this component is engineered to manage critical HVAC system functions such as compressor sequencing, low ambient fan cycling, and lead/lag logic. It features an integrated diagnostic LED to assist technicians with rapid fault isolation and system troubleshooting, ensuring that telecommunication shelters and commercial air handling units maintain stable environmental setpoints. This circuit board includes built-in protective delays, including a three-minute short-cycle protection and pressure switch monitoring, to safeguard the refrigerant circuit against operational failures in demanding field conditions.
Key Benefits for Contractors:
- Direct OEM Integration: Drop-in 70947 replacement ensures seamless electrical compatibility and eliminates field-wiring modifications.
- Advanced System Protection: Integrated lockout logic for High Pressure (HPS) and Low Pressure (LPS) switches prevents component damage during fault conditions.
- Precision Low Ambient Control: Regulates condenser fan cycles to maintain proper head pressure in temperatures as low as 20°F.
- Fault Diagnostics: On-board LED status indicator provides real-time troubleshooting codes, reducing billable diagnostic time.
- Industrial-Grade Durability: Constructed with high-spec solid-state components to withstand the high internal heat loads of telecom HVAC applications.
Common Questions:
What Marvair models is the 70947 board compatible with?
This board is the standard OEM replacement for Marvair MAH, MGH, AVHA, and AVPA series vertical wall-mount air conditioners and heat pumps commonly used in E-houses and data centers.
How do I reset the lockout on this control board?
Lockouts triggered by pressure switch faults can typically be cleared by cycling the 24V control power at the thermostat or the main HACR breaker after verifying the underlying mechanical issue is resolved.
Does this board support economizer operation?
Yes, the Marvair 70947 is designed to interface with factory-installed economizer dampers to optimize free cooling and improve EER efficiency during low outdoor ambient conditions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Shipping & Returns
Description
The Marvair 70947 Control Board is the central diagnostic and operational hub for high-efficiency Marvair HVAC systems, including MAH and MGH vertical wall-mounted units. As a veteran-grade OEM replacement control board, this component is engineered to manage critical HVAC system functions such as compressor sequencing, low ambient fan cycling, and lead/lag logic. It features an integrated diagnostic LED to assist technicians with rapid fault isolation and system troubleshooting, ensuring that telecommunication shelters and commercial air handling units maintain stable environmental setpoints. This circuit board includes built-in protective delays, including a three-minute short-cycle protection and pressure switch monitoring, to safeguard the refrigerant circuit against operational failures in demanding field conditions.
Key Benefits for Contractors:
- Direct OEM Integration: Drop-in 70947 replacement ensures seamless electrical compatibility and eliminates field-wiring modifications.
- Advanced System Protection: Integrated lockout logic for High Pressure (HPS) and Low Pressure (LPS) switches prevents component damage during fault conditions.
- Precision Low Ambient Control: Regulates condenser fan cycles to maintain proper head pressure in temperatures as low as 20°F.
- Fault Diagnostics: On-board LED status indicator provides real-time troubleshooting codes, reducing billable diagnostic time.
- Industrial-Grade Durability: Constructed with high-spec solid-state components to withstand the high internal heat loads of telecom HVAC applications.
Common Questions:
What Marvair models is the 70947 board compatible with?
This board is the standard OEM replacement for Marvair MAH, MGH, AVHA, and AVPA series vertical wall-mount air conditioners and heat pumps commonly used in E-houses and data centers.
How do I reset the lockout on this control board?
Lockouts triggered by pressure switch faults can typically be cleared by cycling the 24V control power at the thermostat or the main HACR breaker after verifying the underlying mechanical issue is resolved.
Does this board support economizer operation?
Yes, the Marvair 70947 is designed to interface with factory-installed economizer dampers to optimize free cooling and improve EER efficiency during low outdoor ambient conditions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
