A fuel cell system comprising: a fuel cell assembly having an anode inlet , a cathode inlet , an anode exhaust , and a cathode exhaust ; a coolant storage module configured to provide coolant to the fuel cell assembly ; a thermal module configured to be fluidly connected to the fuel cell assembly and the coolant storage module , the thermal module comprising a condenser and a separator ; wherein the fuel cell system is configured to generate an expansion exhaust stream by combining at least a portion of one or more of the cathode exhaust exiting the fuel cell assembly , the anode exhaust exiting the fuel cell assembly , an anode gas purge stream, the anode exhaust stream exiting the thermal module separator , and the fluid flow exiting the thermal module condenser ; the fuel cell system further comprising: an expansion turbine configured to receive the expansion exhaust stream ; one or more fans arranged to cool the thermal module condenser ; characterized in that the fuel cell system further comprises controller configured to operate the fuel cell system in a temperature-boost mode, wherein in the temperature-boost mode the controller is configured to control the one or more fans and reduce a set point on the one or more of fans below a predetermined threshold level to increase the exit temperature of a fluid flow from the condenser ; wherein the controller is further configured to operate the fuel cell system in the temperature-boost mode for a predetermined period of time less than or equal to a first predetermined operational time limit when the amount of coolant in the coolant storage module is less than a first threshold amount. a fuel cell assembly having an anode inlet , a cathode inlet , an anode exhaust , and a cathode exhaust ; a coolant storage module configured to provide coolant to the fuel cell assembly ; a thermal module configured to be fluidly connected to the fuel cell assembly and the coolant storage module , the thermal module comprising a condenser and a separator ; wherein the fuel cell system is configured to generate an expansion exhaust stream by combining at least a portion of one or more of the cathode exhaust exiting the fuel cell assembly , the anode exhaust exiting the fuel cell assembly , an anode gas purge stream, the anode exhaust stream exiting the thermal module separator , and the fluid flow exiting the thermal module condenser ; the fuel cell system further comprising: an expansion turbine configured to receive the expansion exhaust stream ; one or more fans arranged to cool the thermal module condenser ; characterized in that the fuel cell system further comprises controller configured to operate the fuel cell system in a temperature-boost mode, wherein in the temperature-boost mode the controller is configured to control the one or more fans and reduce a set point on the one or more of fans below a predetermined threshold level to increase the exit temperature of a fluid flow from the condenser ; an expansion turbine configured to receive the expansion exhaust stream ; one or more fans arranged to cool the thermal module condenser ; characterized in that the fuel cell system further comprises controller configured to operate the fuel cell system in a temperature-boost mode, wherein in the temperature-boost mode the controller is configured to control the one or more fans and reduce a set point on the one or more of fans below a predetermined threshold level to increase the exit temperature of a fluid flow from the condenser ; wherein the controller is further configured to operate the fuel cell system in the temperature-boost mode for a predetermined period of time less than or equal to a first predetermined operational time limit when the amount of coolant in the coolant storage module is less than a first threshold amount. <EOS>