The EHC fluid system (high pressure hydraulic fluid), b. - Low inducer voltage (115VAC) - Defective pressure switch - Inadequate combustion air supply - Disconnected or obstructed pressure tubing - Low inlet gas pressure (if LGPS used) - Restricted vent - Condensate drainage restricted or blocked If it opens during blower on-delay period, blower will come on for the selected blower off-delay. For the low pressure lockout, unscrew the cap (in the left-hand circle on the previous picture) revealing the plunger shown on the left. Low Oil Pressure Warning 4. Remote Reset 11. Also an update on low pressure lockout condition: Tech came out and after checking subcool with gauges determined everything seemed fine. When the flow stops, let it go, and replace the cap. 11.5.2.1 EHC Fluid System The valves that admit and control the steam to the high and low pressure turbines are opened by high pressure hydraulic fluid acting on the valves= actuators or If your locking hubs are bad, it will affect the entire four-wheel drive system. Compressor “Jog” Feature 6. We use cookies to give you the best possible experience on our website. RPM necessary to operate inducer in low-heat mode. NOTE: The heat cycle can start in either high or low heat. Factory FIT RLC, 140 & 150: Kashima coated upper tubes, 1.5" tapered steerer, 1 1/8" steerer, low-speed compression, lever actuated lockout, lockout force adjust, air spring pressure, rebound. External Alarm Relay Contact 7. Lockout Requires Manual Reset P170LB-61 SPST Fixed Approximately 65 (448) 1/4 in. Oil Warning & Lockout Notification 8. Manual Reset 5. Fault And Run History 14. Gently pull the plunger out, you should hear the gas going through the regulator as it fills up the pipework with gas. The low-current, normally open (NO) side of the relay supplies current to the Fourth gear pressure switch on the valvebody inside the case, … Modbus Communication 10. Motor Trip Notification (4D/6D Only) 9. When high-pressure switch closes, inducer motor RPM is noted by microprocessor before the 25 sec prepurge period begins. Compressor Run Status (Proofing) 12. If a high-heat cycle is initiated, the inducer continues increasing its speed after low-pressure switch closes. In cool mode with outdoor temp 72F low side around 125 PSI and High side about 280PSI. Code 13 – Limit Circuit Lockout Code 14 – Ignition Lockout Code 21 - Gas Heating Lockout Code 22 - Abnormal Flame Proving Signal Code 23 – Pressure Switch Did Not Open Code 24 – Secondary Voltage Fuse Open Code 33 – Limit Circuit Fault AND high heat only is active Code 45 – Control Circuitry Lockout he said could be a faulty Low pressure switch and to keep an eye on it and to call if it locks out on Low pressure again. Asset Information 13. 3. a. Hubs are either locked manually or automatically lock when you engage the four-wheel drive, depending on the type of four-wheel drive system in the vehicle. The hubs on your vehicle are a part of its four-wheel drive system. The emergency trip system, and c. The electrical control system. LOW SUCTION PRESSURE AND HIGH FLASH TANK FAULT TROUBLESHOOTING File In/With: 201.21-NM1, -NM2, -NM3, 201.21-NM4, 201.23-NM1, 201.23-NM2 Equipment YCAV & YCIV Chillers Affected: GENERAL This instruction is intended as an aid for diagnosing the many causes of low suction pressure and high flash tank faults on YCAV and YCIV chillers. Carrier Infinity System, Code 83-Low Pressure Lockout, Technician cleaned outside and inside coils, replaced filter, - Answered by a verified HVAC Technician.